Mercurial > vim
annotate src/regexp_nfa.c @ 4679:4d92b873acef v7.3.1087
updated for version 7.3.1087
Problem: A leading star is not seen as a normal char when \{} follows.
Solution: Save and restore the parse state properly.
| author | Bram Moolenaar <bram@vim.org> |
|---|---|
| date | Sat, 01 Jun 2013 14:42:56 +0200 |
| parents | c1622ff9ed8d |
| children | 2f51ee8825db |
| rev | line source |
|---|---|
| 4444 | 1 /* vi:set ts=8 sts=4 sw=4: |
| 2 * | |
| 3 * NFA regular expression implementation. | |
| 4 * | |
| 5 * This file is included in "regexp.c". | |
| 6 */ | |
| 7 | |
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8 /* |
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9 * Logging of NFA engine. |
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10 * |
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11 * The NFA engine can write four log files: |
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12 * - Error log: Contains NFA engine's fatal errors. |
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13 * - Dump log: Contains compiled NFA state machine's information. |
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14 * - Run log: Contains information of matching procedure. |
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15 * - Debug log: Contains detailed information of matching procedure. Can be |
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16 * disabled by undefining NFA_REGEXP_DEBUG_LOG. |
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17 * The first one can also be used without debug mode. |
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18 * The last three are enabled when compiled as debug mode and individually |
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19 * disabled by commenting them out. |
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20 * The log files can get quite big! |
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21 * Do disable all of this when compiling Vim for debugging, undefine DEBUG in |
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22 * regexp.c |
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23 */ |
| 4444 | 24 #ifdef DEBUG |
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25 # define NFA_REGEXP_ERROR_LOG "nfa_regexp_error.log" |
| 4444 | 26 # define ENABLE_LOG |
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27 # define NFA_REGEXP_DUMP_LOG "nfa_regexp_dump.log" |
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28 # define NFA_REGEXP_RUN_LOG "nfa_regexp_run.log" |
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29 # define NFA_REGEXP_DEBUG_LOG "nfa_regexp_debug.log" |
| 4444 | 30 #endif |
| 31 | |
| 32 enum | |
| 33 { | |
| 34 NFA_SPLIT = -1024, | |
| 35 NFA_MATCH, | |
| 36 NFA_SKIP_CHAR, /* matches a 0-length char */ | |
| 37 NFA_END_NEG_RANGE, /* Used when expanding [^ab] */ | |
| 38 | |
| 39 NFA_CONCAT, | |
| 40 NFA_OR, | |
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41 NFA_STAR, /* greedy * */ |
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42 NFA_STAR_NONGREEDY, /* non-greedy * */ |
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43 NFA_QUEST, /* greedy \? */ |
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44 NFA_QUEST_NONGREEDY, /* non-greedy \? */ |
| 4444 | 45 NFA_NOT, /* used for [^ab] negated char ranges */ |
| 46 | |
| 47 NFA_BOL, /* ^ Begin line */ | |
| 48 NFA_EOL, /* $ End line */ | |
| 49 NFA_BOW, /* \< Begin word */ | |
| 50 NFA_EOW, /* \> End word */ | |
| 51 NFA_BOF, /* \%^ Begin file */ | |
| 52 NFA_EOF, /* \%$ End file */ | |
| 53 NFA_NEWL, | |
| 54 NFA_ZSTART, /* Used for \zs */ | |
| 55 NFA_ZEND, /* Used for \ze */ | |
| 56 NFA_NOPEN, /* Start of subexpression marked with \%( */ | |
| 57 NFA_NCLOSE, /* End of subexpr. marked with \%( ... \) */ | |
| 58 NFA_START_INVISIBLE, | |
| 59 NFA_END_INVISIBLE, | |
| 60 NFA_COMPOSING, /* Next nodes in NFA are part of the | |
| 61 composing multibyte char */ | |
| 62 NFA_END_COMPOSING, /* End of a composing char in the NFA */ | |
| 63 | |
| 64 /* The following are used only in the postfix form, not in the NFA */ | |
| 65 NFA_PREV_ATOM_NO_WIDTH, /* Used for \@= */ | |
| 66 NFA_PREV_ATOM_NO_WIDTH_NEG, /* Used for \@! */ | |
| 67 NFA_PREV_ATOM_JUST_BEFORE, /* Used for \@<= */ | |
| 68 NFA_PREV_ATOM_JUST_BEFORE_NEG, /* Used for \@<! */ | |
| 69 NFA_PREV_ATOM_LIKE_PATTERN, /* Used for \@> */ | |
| 70 | |
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71 NFA_BACKREF1, /* \1 */ |
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72 NFA_BACKREF2, /* \2 */ |
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73 NFA_BACKREF3, /* \3 */ |
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74 NFA_BACKREF4, /* \4 */ |
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75 NFA_BACKREF5, /* \5 */ |
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76 NFA_BACKREF6, /* \6 */ |
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77 NFA_BACKREF7, /* \7 */ |
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78 NFA_BACKREF8, /* \8 */ |
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79 NFA_BACKREF9, /* \9 */ |
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80 NFA_SKIP, /* Skip characters */ |
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81 |
| 4444 | 82 NFA_MOPEN, |
| 83 NFA_MCLOSE = NFA_MOPEN + NSUBEXP, | |
| 84 | |
| 85 /* NFA_FIRST_NL */ | |
| 86 NFA_ANY = NFA_MCLOSE + NSUBEXP, /* Match any one character. */ | |
| 87 NFA_ANYOF, /* Match any character in this string. */ | |
| 88 NFA_ANYBUT, /* Match any character not in this string. */ | |
| 89 NFA_IDENT, /* Match identifier char */ | |
| 90 NFA_SIDENT, /* Match identifier char but no digit */ | |
| 91 NFA_KWORD, /* Match keyword char */ | |
| 92 NFA_SKWORD, /* Match word char but no digit */ | |
| 93 NFA_FNAME, /* Match file name char */ | |
| 94 NFA_SFNAME, /* Match file name char but no digit */ | |
| 95 NFA_PRINT, /* Match printable char */ | |
| 96 NFA_SPRINT, /* Match printable char but no digit */ | |
| 97 NFA_WHITE, /* Match whitespace char */ | |
| 98 NFA_NWHITE, /* Match non-whitespace char */ | |
| 99 NFA_DIGIT, /* Match digit char */ | |
| 100 NFA_NDIGIT, /* Match non-digit char */ | |
| 101 NFA_HEX, /* Match hex char */ | |
| 102 NFA_NHEX, /* Match non-hex char */ | |
| 103 NFA_OCTAL, /* Match octal char */ | |
| 104 NFA_NOCTAL, /* Match non-octal char */ | |
| 105 NFA_WORD, /* Match word char */ | |
| 106 NFA_NWORD, /* Match non-word char */ | |
| 107 NFA_HEAD, /* Match head char */ | |
| 108 NFA_NHEAD, /* Match non-head char */ | |
| 109 NFA_ALPHA, /* Match alpha char */ | |
| 110 NFA_NALPHA, /* Match non-alpha char */ | |
| 111 NFA_LOWER, /* Match lowercase char */ | |
| 112 NFA_NLOWER, /* Match non-lowercase char */ | |
| 113 NFA_UPPER, /* Match uppercase char */ | |
| 114 NFA_NUPPER, /* Match non-uppercase char */ | |
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115 |
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116 NFA_CURSOR, /* Match cursor pos */ |
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117 NFA_LNUM, /* Match line number */ |
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118 NFA_LNUM_GT, /* Match > line number */ |
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119 NFA_LNUM_LT, /* Match < line number */ |
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120 NFA_COL, /* Match cursor column */ |
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121 NFA_COL_GT, /* Match > cursor column */ |
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122 NFA_COL_LT, /* Match < cursor column */ |
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123 NFA_VCOL, /* Match cursor virtual column */ |
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124 NFA_VCOL_GT, /* Match > cursor virtual column */ |
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125 NFA_VCOL_LT, /* Match < cursor virtual column */ |
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126 |
| 4444 | 127 NFA_FIRST_NL = NFA_ANY + ADD_NL, |
| 128 NFA_LAST_NL = NFA_NUPPER + ADD_NL, | |
| 129 | |
| 130 /* Character classes [:alnum:] etc */ | |
| 131 NFA_CLASS_ALNUM, | |
| 132 NFA_CLASS_ALPHA, | |
| 133 NFA_CLASS_BLANK, | |
| 134 NFA_CLASS_CNTRL, | |
| 135 NFA_CLASS_DIGIT, | |
| 136 NFA_CLASS_GRAPH, | |
| 137 NFA_CLASS_LOWER, | |
| 138 NFA_CLASS_PRINT, | |
| 139 NFA_CLASS_PUNCT, | |
| 140 NFA_CLASS_SPACE, | |
| 141 NFA_CLASS_UPPER, | |
| 142 NFA_CLASS_XDIGIT, | |
| 143 NFA_CLASS_TAB, | |
| 144 NFA_CLASS_RETURN, | |
| 145 NFA_CLASS_BACKSPACE, | |
| 146 NFA_CLASS_ESCAPE | |
| 147 }; | |
| 148 | |
| 149 /* Keep in sync with classchars. */ | |
| 150 static int nfa_classcodes[] = { | |
| 151 NFA_ANY, NFA_IDENT, NFA_SIDENT, NFA_KWORD,NFA_SKWORD, | |
| 152 NFA_FNAME, NFA_SFNAME, NFA_PRINT, NFA_SPRINT, | |
| 153 NFA_WHITE, NFA_NWHITE, NFA_DIGIT, NFA_NDIGIT, | |
| 154 NFA_HEX, NFA_NHEX, NFA_OCTAL, NFA_NOCTAL, | |
| 155 NFA_WORD, NFA_NWORD, NFA_HEAD, NFA_NHEAD, | |
| 156 NFA_ALPHA, NFA_NALPHA, NFA_LOWER, NFA_NLOWER, | |
| 157 NFA_UPPER, NFA_NUPPER | |
| 158 }; | |
| 159 | |
| 160 static char_u e_misplaced[] = N_("E866: (NFA regexp) Misplaced %c"); | |
| 161 | |
| 162 /* | |
| 163 * NFA errors can be of 3 types: | |
| 164 * *** NFA runtime errors, when something unknown goes wrong. The NFA fails | |
| 165 * silently and revert the to backtracking engine. | |
| 166 * syntax_error = FALSE; | |
| 167 * *** Regexp syntax errors, when the input regexp is not syntactically correct. | |
| 168 * The NFA engine displays an error message, and nothing else happens. | |
| 169 * syntax_error = TRUE | |
| 170 * *** Unsupported features, when the input regexp uses an operator that is not | |
| 171 * implemented in the NFA. The NFA engine fails silently, and reverts to the | |
| 172 * old backtracking engine. | |
| 173 * syntax_error = FALSE | |
| 174 * "The NFA fails" means that "compiling the regexp with the NFA fails": | |
| 175 * nfa_regcomp() returns FAIL. | |
| 176 */ | |
| 177 static int syntax_error = FALSE; | |
| 178 | |
| 179 /* NFA regexp \ze operator encountered. */ | |
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180 static int nfa_has_zend; |
| 4444 | 181 |
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182 /* NFA regexp \1 .. \9 encountered. */ |
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183 static int nfa_has_backref; |
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184 |
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185 /* Number of sub expressions actually being used during execution. 1 if only |
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186 * the whole match (subexpr 0) is used. */ |
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187 static int nfa_nsubexpr; |
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188 |
| 4444 | 189 static int *post_start; /* holds the postfix form of r.e. */ |
| 190 static int *post_end; | |
| 191 static int *post_ptr; | |
| 192 | |
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193 static int nstate; /* Number of states in the NFA. Also used when |
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194 * executing. */ |
| 4444 | 195 static int istate; /* Index in the state vector, used in new_state() */ |
| 196 | |
| 197 | |
| 198 static int nfa_regcomp_start __ARGS((char_u*expr, int re_flags)); | |
| 199 static int nfa_recognize_char_class __ARGS((char_u *start, char_u *end, int extra_newl)); | |
| 200 static int nfa_emit_equi_class __ARGS((int c, int neg)); | |
| 201 static int nfa_regatom __ARGS((void)); | |
| 202 static int nfa_regpiece __ARGS((void)); | |
| 203 static int nfa_regconcat __ARGS((void)); | |
| 204 static int nfa_regbranch __ARGS((void)); | |
| 205 static int nfa_reg __ARGS((int paren)); | |
| 206 #ifdef DEBUG | |
| 207 static void nfa_set_code __ARGS((int c)); | |
| 208 static void nfa_postfix_dump __ARGS((char_u *expr, int retval)); | |
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209 static void nfa_print_state __ARGS((FILE *debugf, nfa_state_T *state)); |
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210 static void nfa_print_state2 __ARGS((FILE *debugf, nfa_state_T *state, garray_T *indent)); |
| 4444 | 211 static void nfa_dump __ARGS((nfa_regprog_T *prog)); |
| 212 #endif | |
| 213 static int *re2post __ARGS((void)); | |
| 214 static nfa_state_T *new_state __ARGS((int c, nfa_state_T *out, nfa_state_T *out1)); | |
| 215 static nfa_state_T *post2nfa __ARGS((int *postfix, int *end, int nfa_calc_size)); | |
| 216 static int check_char_class __ARGS((int class, int c)); | |
| 217 static void st_error __ARGS((int *postfix, int *end, int *p)); | |
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218 static void nfa_set_neg_listids __ARGS((nfa_state_T *start)); |
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219 static void nfa_set_null_listids __ARGS((nfa_state_T *start)); |
| 4444 | 220 static void nfa_save_listids __ARGS((nfa_state_T *start, int *list)); |
| 221 static void nfa_restore_listids __ARGS((nfa_state_T *start, int *list)); | |
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222 static int nfa_re_num_cmp __ARGS((long_u val, int op, long_u pos)); |
| 4444 | 223 static long nfa_regtry __ARGS((nfa_state_T *start, colnr_T col)); |
| 224 static long nfa_regexec_both __ARGS((char_u *line, colnr_T col)); | |
| 225 static regprog_T *nfa_regcomp __ARGS((char_u *expr, int re_flags)); | |
| 226 static int nfa_regexec __ARGS((regmatch_T *rmp, char_u *line, colnr_T col)); | |
| 227 static long nfa_regexec_multi __ARGS((regmmatch_T *rmp, win_T *win, buf_T *buf, linenr_T lnum, colnr_T col, proftime_T *tm)); | |
| 228 | |
| 229 /* helper functions used when doing re2post() ... regatom() parsing */ | |
| 230 #define EMIT(c) do { \ | |
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231 if (post_ptr >= post_end && realloc_post_list() == FAIL) \ |
| 4444 | 232 return FAIL; \ |
| 233 *post_ptr++ = c; \ | |
| 234 } while (0) | |
| 235 | |
| 236 /* | |
| 237 * Initialize internal variables before NFA compilation. | |
| 238 * Return OK on success, FAIL otherwise. | |
| 239 */ | |
| 240 static int | |
| 241 nfa_regcomp_start(expr, re_flags) | |
| 242 char_u *expr; | |
| 243 int re_flags; /* see vim_regcomp() */ | |
| 244 { | |
| 4458 | 245 size_t postfix_size; |
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246 int nstate_max; |
| 4444 | 247 |
| 248 nstate = 0; | |
| 249 istate = 0; | |
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250 /* A reasonable estimation for maximum size */ |
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251 nstate_max = (int)(STRLEN(expr) + 1) * 25; |
| 4444 | 252 |
| 4454 | 253 /* Some items blow up in size, such as [A-z]. Add more space for that. |
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254 * When it is still not enough realloc_post_list() will be used. */ |
| 4458 | 255 nstate_max += 1000; |
| 4454 | 256 |
| 257 /* Size for postfix representation of expr. */ | |
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258 postfix_size = sizeof(int) * nstate_max; |
| 4454 | 259 |
| 4444 | 260 post_start = (int *)lalloc(postfix_size, TRUE); |
| 261 if (post_start == NULL) | |
| 262 return FAIL; | |
| 263 vim_memset(post_start, 0, postfix_size); | |
| 264 post_ptr = post_start; | |
| 4454 | 265 post_end = post_start + nstate_max; |
| 4444 | 266 nfa_has_zend = FALSE; |
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267 nfa_has_backref = FALSE; |
| 4444 | 268 |
| 269 regcomp_start(expr, re_flags); | |
| 270 | |
| 271 return OK; | |
| 272 } | |
| 273 | |
| 274 /* | |
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275 * Allocate more space for post_start. Called when |
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276 * running above the estimated number of states. |
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277 */ |
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278 static int |
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279 realloc_post_list() |
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280 { |
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281 int nstate_max = (int)(post_end - post_start); |
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282 int new_max = nstate_max + 1000; |
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283 int *new_start; |
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284 int *old_start; |
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285 |
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286 new_start = (int *)lalloc(new_max * sizeof(int), TRUE); |
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287 if (new_start == NULL) |
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288 return FAIL; |
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289 mch_memmove(new_start, post_start, nstate_max * sizeof(int)); |
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290 vim_memset(new_start + nstate_max, 0, 1000 * sizeof(int)); |
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291 old_start = post_start; |
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292 post_start = new_start; |
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293 post_ptr = new_start + (post_ptr - old_start); |
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294 post_end = post_start + new_max; |
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295 vim_free(old_start); |
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296 return OK; |
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297 } |
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298 |
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299 /* |
| 4444 | 300 * Search between "start" and "end" and try to recognize a |
| 301 * character class in expanded form. For example [0-9]. | |
| 302 * On success, return the id the character class to be emitted. | |
| 303 * On failure, return 0 (=FAIL) | |
| 304 * Start points to the first char of the range, while end should point | |
| 305 * to the closing brace. | |
| 306 */ | |
| 307 static int | |
| 308 nfa_recognize_char_class(start, end, extra_newl) | |
| 309 char_u *start; | |
| 310 char_u *end; | |
| 311 int extra_newl; | |
| 312 { | |
| 313 int i; | |
| 314 /* Each of these variables takes up a char in "config[]", | |
| 315 * in the order they are here. */ | |
| 316 int not = FALSE, af = FALSE, AF = FALSE, az = FALSE, AZ = FALSE, | |
| 317 o7 = FALSE, o9 = FALSE, underscore = FALSE, newl = FALSE; | |
| 318 char_u *p; | |
| 319 #define NCONFIGS 16 | |
| 320 int classid[NCONFIGS] = { | |
| 321 NFA_DIGIT, NFA_NDIGIT, NFA_HEX, NFA_NHEX, | |
| 322 NFA_OCTAL, NFA_NOCTAL, NFA_WORD, NFA_NWORD, | |
| 323 NFA_HEAD, NFA_NHEAD, NFA_ALPHA, NFA_NALPHA, | |
| 324 NFA_LOWER, NFA_NLOWER, NFA_UPPER, NFA_NUPPER | |
| 325 }; | |
| 4450 | 326 char_u myconfig[10]; |
| 4444 | 327 char_u config[NCONFIGS][9] = { |
| 328 "000000100", /* digit */ | |
| 329 "100000100", /* non digit */ | |
| 330 "011000100", /* hex-digit */ | |
| 331 "111000100", /* non hex-digit */ | |
| 332 "000001000", /* octal-digit */ | |
| 333 "100001000", /* [^0-7] */ | |
| 334 "000110110", /* [0-9A-Za-z_] */ | |
| 335 "100110110", /* [^0-9A-Za-z_] */ | |
| 336 "000110010", /* head of word */ | |
| 337 "100110010", /* not head of word */ | |
| 338 "000110000", /* alphabetic char a-z */ | |
| 339 "100110000", /* non alphabetic char */ | |
| 340 "000100000", /* lowercase letter */ | |
| 341 "100100000", /* non lowercase */ | |
| 342 "000010000", /* uppercase */ | |
| 343 "100010000" /* non uppercase */ | |
| 344 }; | |
| 345 | |
| 346 if (extra_newl == TRUE) | |
| 347 newl = TRUE; | |
| 348 | |
| 349 if (*end != ']') | |
| 350 return FAIL; | |
| 351 p = start; | |
| 352 if (*p == '^') | |
| 353 { | |
| 354 not = TRUE; | |
| 355 p ++; | |
| 356 } | |
| 357 | |
| 358 while (p < end) | |
| 359 { | |
| 360 if (p + 2 < end && *(p + 1) == '-') | |
| 361 { | |
| 362 switch (*p) | |
| 363 { | |
| 364 case '0': | |
| 365 if (*(p + 2) == '9') | |
| 366 { | |
| 367 o9 = TRUE; | |
| 368 break; | |
| 369 } | |
| 370 else | |
| 371 if (*(p + 2) == '7') | |
| 372 { | |
| 373 o7 = TRUE; | |
| 374 break; | |
| 375 } | |
| 376 case 'a': | |
| 377 if (*(p + 2) == 'z') | |
| 378 { | |
| 379 az = TRUE; | |
| 380 break; | |
| 381 } | |
| 382 else | |
| 383 if (*(p + 2) == 'f') | |
| 384 { | |
| 385 af = TRUE; | |
| 386 break; | |
| 387 } | |
| 388 case 'A': | |
| 389 if (*(p + 2) == 'Z') | |
| 390 { | |
| 391 AZ = TRUE; | |
| 392 break; | |
| 393 } | |
| 394 else | |
| 395 if (*(p + 2) == 'F') | |
| 396 { | |
| 397 AF = TRUE; | |
| 398 break; | |
| 399 } | |
| 400 /* FALLTHROUGH */ | |
| 401 default: | |
| 402 return FAIL; | |
| 403 } | |
| 404 p += 3; | |
| 405 } | |
| 406 else if (p + 1 < end && *p == '\\' && *(p + 1) == 'n') | |
| 407 { | |
| 408 newl = TRUE; | |
| 409 p += 2; | |
| 410 } | |
| 411 else if (*p == '_') | |
| 412 { | |
| 413 underscore = TRUE; | |
| 414 p ++; | |
| 415 } | |
| 416 else if (*p == '\n') | |
| 417 { | |
| 418 newl = TRUE; | |
| 419 p ++; | |
| 420 } | |
| 421 else | |
| 422 return FAIL; | |
| 423 } /* while (p < end) */ | |
| 424 | |
| 425 if (p != end) | |
| 426 return FAIL; | |
| 427 | |
| 428 /* build the config that represents the ranges we gathered */ | |
| 429 STRCPY(myconfig, "000000000"); | |
| 430 if (not == TRUE) | |
| 431 myconfig[0] = '1'; | |
| 432 if (af == TRUE) | |
| 433 myconfig[1] = '1'; | |
| 434 if (AF == TRUE) | |
| 435 myconfig[2] = '1'; | |
| 436 if (az == TRUE) | |
| 437 myconfig[3] = '1'; | |
| 438 if (AZ == TRUE) | |
| 439 myconfig[4] = '1'; | |
| 440 if (o7 == TRUE) | |
| 441 myconfig[5] = '1'; | |
| 442 if (o9 == TRUE) | |
| 443 myconfig[6] = '1'; | |
| 444 if (underscore == TRUE) | |
| 445 myconfig[7] = '1'; | |
| 446 if (newl == TRUE) | |
| 447 { | |
| 448 myconfig[8] = '1'; | |
| 449 extra_newl = ADD_NL; | |
| 450 } | |
| 451 /* try to recognize character classes */ | |
| 452 for (i = 0; i < NCONFIGS; i++) | |
| 4450 | 453 if (STRNCMP(myconfig, config[i], 8) == 0) |
| 4444 | 454 return classid[i] + extra_newl; |
| 455 | |
| 456 /* fallthrough => no success so far */ | |
| 457 return FAIL; | |
| 458 | |
| 459 #undef NCONFIGS | |
| 460 } | |
| 461 | |
| 462 /* | |
| 463 * Produce the bytes for equivalence class "c". | |
| 464 * Currently only handles latin1, latin9 and utf-8. | |
| 465 * Emits bytes in postfix notation: 'a,b,NFA_OR,c,NFA_OR' is | |
| 466 * equivalent to 'a OR b OR c' | |
| 467 * | |
| 468 * NOTE! When changing this function, also update reg_equi_class() | |
| 469 */ | |
| 470 static int | |
| 471 nfa_emit_equi_class(c, neg) | |
| 472 int c; | |
| 473 int neg; | |
| 474 { | |
| 475 int first = TRUE; | |
| 476 int glue = neg == TRUE ? NFA_CONCAT : NFA_OR; | |
| 477 #define EMIT2(c) \ | |
| 478 EMIT(c); \ | |
| 479 if (neg == TRUE) { \ | |
| 480 EMIT(NFA_NOT); \ | |
| 481 } \ | |
| 482 if (first == FALSE) \ | |
| 483 EMIT(glue); \ | |
| 484 else \ | |
| 485 first = FALSE; \ | |
| 486 | |
| 487 #ifdef FEAT_MBYTE | |
| 488 if (enc_utf8 || STRCMP(p_enc, "latin1") == 0 | |
| 489 || STRCMP(p_enc, "iso-8859-15") == 0) | |
| 490 #endif | |
| 491 { | |
| 492 switch (c) | |
| 493 { | |
| 494 case 'A': case '\300': case '\301': case '\302': | |
| 495 case '\303': case '\304': case '\305': | |
| 496 EMIT2('A'); EMIT2('\300'); EMIT2('\301'); | |
| 497 EMIT2('\302'); EMIT2('\303'); EMIT2('\304'); | |
| 498 EMIT2('\305'); | |
| 499 return OK; | |
| 500 | |
| 501 case 'C': case '\307': | |
| 502 EMIT2('C'); EMIT2('\307'); | |
| 503 return OK; | |
| 504 | |
| 505 case 'E': case '\310': case '\311': case '\312': case '\313': | |
| 506 EMIT2('E'); EMIT2('\310'); EMIT2('\311'); | |
| 507 EMIT2('\312'); EMIT2('\313'); | |
| 508 return OK; | |
| 509 | |
| 510 case 'I': case '\314': case '\315': case '\316': case '\317': | |
| 511 EMIT2('I'); EMIT2('\314'); EMIT2('\315'); | |
| 512 EMIT2('\316'); EMIT2('\317'); | |
| 513 return OK; | |
| 514 | |
| 515 case 'N': case '\321': | |
| 516 EMIT2('N'); EMIT2('\321'); | |
| 517 return OK; | |
| 518 | |
| 519 case 'O': case '\322': case '\323': case '\324': case '\325': | |
| 520 case '\326': | |
| 521 EMIT2('O'); EMIT2('\322'); EMIT2('\323'); | |
| 522 EMIT2('\324'); EMIT2('\325'); EMIT2('\326'); | |
| 523 return OK; | |
| 524 | |
| 525 case 'U': case '\331': case '\332': case '\333': case '\334': | |
| 526 EMIT2('U'); EMIT2('\331'); EMIT2('\332'); | |
| 527 EMIT2('\333'); EMIT2('\334'); | |
| 528 return OK; | |
| 529 | |
| 530 case 'Y': case '\335': | |
| 531 EMIT2('Y'); EMIT2('\335'); | |
| 532 return OK; | |
| 533 | |
| 534 case 'a': case '\340': case '\341': case '\342': | |
| 535 case '\343': case '\344': case '\345': | |
| 536 EMIT2('a'); EMIT2('\340'); EMIT2('\341'); | |
| 537 EMIT2('\342'); EMIT2('\343'); EMIT2('\344'); | |
| 538 EMIT2('\345'); | |
| 539 return OK; | |
| 540 | |
| 541 case 'c': case '\347': | |
| 542 EMIT2('c'); EMIT2('\347'); | |
| 543 return OK; | |
| 544 | |
| 545 case 'e': case '\350': case '\351': case '\352': case '\353': | |
| 546 EMIT2('e'); EMIT2('\350'); EMIT2('\351'); | |
| 547 EMIT2('\352'); EMIT2('\353'); | |
| 548 return OK; | |
| 549 | |
| 550 case 'i': case '\354': case '\355': case '\356': case '\357': | |
| 551 EMIT2('i'); EMIT2('\354'); EMIT2('\355'); | |
| 552 EMIT2('\356'); EMIT2('\357'); | |
| 553 return OK; | |
| 554 | |
| 555 case 'n': case '\361': | |
| 556 EMIT2('n'); EMIT2('\361'); | |
| 557 return OK; | |
| 558 | |
| 559 case 'o': case '\362': case '\363': case '\364': case '\365': | |
| 560 case '\366': | |
| 561 EMIT2('o'); EMIT2('\362'); EMIT2('\363'); | |
| 562 EMIT2('\364'); EMIT2('\365'); EMIT2('\366'); | |
| 563 return OK; | |
| 564 | |
| 565 case 'u': case '\371': case '\372': case '\373': case '\374': | |
| 566 EMIT2('u'); EMIT2('\371'); EMIT2('\372'); | |
| 567 EMIT2('\373'); EMIT2('\374'); | |
| 568 return OK; | |
| 569 | |
| 570 case 'y': case '\375': case '\377': | |
| 571 EMIT2('y'); EMIT2('\375'); EMIT2('\377'); | |
| 572 return OK; | |
| 573 | |
| 574 default: | |
| 575 return FAIL; | |
| 576 } | |
| 577 } | |
| 578 | |
| 579 EMIT(c); | |
| 580 return OK; | |
| 581 #undef EMIT2 | |
| 582 } | |
| 583 | |
| 584 /* | |
| 585 * Code to parse regular expression. | |
| 586 * | |
| 587 * We try to reuse parsing functions in regexp.c to | |
| 588 * minimize surprise and keep the syntax consistent. | |
| 589 */ | |
| 590 | |
| 591 /* | |
| 592 * Parse the lowest level. | |
| 593 * | |
| 594 * An atom can be one of a long list of items. Many atoms match one character | |
| 595 * in the text. It is often an ordinary character or a character class. | |
| 596 * Braces can be used to make a pattern into an atom. The "\z(\)" construct | |
| 597 * is only for syntax highlighting. | |
| 598 * | |
| 599 * atom ::= ordinary-atom | |
| 600 * or \( pattern \) | |
| 601 * or \%( pattern \) | |
| 602 * or \z( pattern \) | |
| 603 */ | |
| 604 static int | |
| 605 nfa_regatom() | |
| 606 { | |
| 607 int c; | |
| 608 int charclass; | |
| 609 int equiclass; | |
| 610 int collclass; | |
| 611 int got_coll_char; | |
| 612 char_u *p; | |
| 613 char_u *endp; | |
| 614 #ifdef FEAT_MBYTE | |
| 615 char_u *old_regparse = regparse; | |
| 616 #endif | |
| 617 int extra = 0; | |
| 618 int first; | |
| 619 int emit_range; | |
| 620 int negated; | |
| 621 int result; | |
| 622 int startc = -1; | |
| 623 int endc = -1; | |
| 624 int oldstartc = -1; | |
| 625 int cpo_lit; /* 'cpoptions' contains 'l' flag */ | |
| 626 int cpo_bsl; /* 'cpoptions' contains '\' flag */ | |
| 627 int glue; /* ID that will "glue" nodes together */ | |
| 628 | |
| 629 cpo_lit = vim_strchr(p_cpo, CPO_LITERAL) != NULL; | |
| 630 cpo_bsl = vim_strchr(p_cpo, CPO_BACKSL) != NULL; | |
| 631 | |
| 632 c = getchr(); | |
| 633 switch (c) | |
| 634 { | |
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635 case NUL: |
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636 syntax_error = TRUE; |
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637 EMSG_RET_FAIL(_("E865: (NFA) Regexp end encountered prematurely")); |
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638 |
| 4444 | 639 case Magic('^'): |
| 640 EMIT(NFA_BOL); | |
| 641 break; | |
| 642 | |
| 643 case Magic('$'): | |
| 644 EMIT(NFA_EOL); | |
| 645 #if defined(FEAT_SYN_HL) || defined(PROTO) | |
| 646 had_eol = TRUE; | |
| 647 #endif | |
| 648 break; | |
| 649 | |
| 650 case Magic('<'): | |
| 651 EMIT(NFA_BOW); | |
| 652 break; | |
| 653 | |
| 654 case Magic('>'): | |
| 655 EMIT(NFA_EOW); | |
| 656 break; | |
| 657 | |
| 658 case Magic('_'): | |
| 659 c = no_Magic(getchr()); | |
| 660 if (c == '^') /* "\_^" is start-of-line */ | |
| 661 { | |
| 662 EMIT(NFA_BOL); | |
| 663 break; | |
| 664 } | |
| 665 if (c == '$') /* "\_$" is end-of-line */ | |
| 666 { | |
| 667 EMIT(NFA_EOL); | |
| 668 #if defined(FEAT_SYN_HL) || defined(PROTO) | |
| 669 had_eol = TRUE; | |
| 670 #endif | |
| 671 break; | |
| 672 } | |
| 673 | |
| 674 extra = ADD_NL; | |
| 675 | |
| 676 /* "\_[" is collection plus newline */ | |
| 677 if (c == '[') | |
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678 goto collection; |
| 4444 | 679 |
| 680 /* "\_x" is character class plus newline */ | |
| 681 /*FALLTHROUGH*/ | |
| 682 | |
| 683 /* | |
| 684 * Character classes. | |
| 685 */ | |
| 686 case Magic('.'): | |
| 687 case Magic('i'): | |
| 688 case Magic('I'): | |
| 689 case Magic('k'): | |
| 690 case Magic('K'): | |
| 691 case Magic('f'): | |
| 692 case Magic('F'): | |
| 693 case Magic('p'): | |
| 694 case Magic('P'): | |
| 695 case Magic('s'): | |
| 696 case Magic('S'): | |
| 697 case Magic('d'): | |
| 698 case Magic('D'): | |
| 699 case Magic('x'): | |
| 700 case Magic('X'): | |
| 701 case Magic('o'): | |
| 702 case Magic('O'): | |
| 703 case Magic('w'): | |
| 704 case Magic('W'): | |
| 705 case Magic('h'): | |
| 706 case Magic('H'): | |
| 707 case Magic('a'): | |
| 708 case Magic('A'): | |
| 709 case Magic('l'): | |
| 710 case Magic('L'): | |
| 711 case Magic('u'): | |
| 712 case Magic('U'): | |
| 713 p = vim_strchr(classchars, no_Magic(c)); | |
| 714 if (p == NULL) | |
| 715 { | |
|
4571
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
716 EMSGN("INTERNAL: Unknown character class char: %ld", c); |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
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4569
diff
changeset
|
717 return FAIL; |
| 4444 | 718 } |
| 719 #ifdef FEAT_MBYTE | |
| 720 /* When '.' is followed by a composing char ignore the dot, so that | |
| 721 * the composing char is matched here. */ | |
| 722 if (enc_utf8 && c == Magic('.') && utf_iscomposing(peekchr())) | |
| 723 { | |
|
4535
45f97c349537
updated for version 7.3.1015
Bram Moolenaar <bram@vim.org>
parents:
4533
diff
changeset
|
724 old_regparse = regparse; |
| 4444 | 725 c = getchr(); |
| 726 goto nfa_do_multibyte; | |
| 727 } | |
| 728 #endif | |
| 729 EMIT(nfa_classcodes[p - classchars]); | |
| 730 if (extra == ADD_NL) | |
| 731 { | |
| 732 EMIT(NFA_NEWL); | |
| 733 EMIT(NFA_OR); | |
| 734 regflags |= RF_HASNL; | |
| 735 } | |
| 736 break; | |
| 737 | |
| 738 case Magic('n'): | |
| 739 if (reg_string) | |
| 740 /* In a string "\n" matches a newline character. */ | |
| 741 EMIT(NL); | |
| 742 else | |
| 743 { | |
| 744 /* In buffer text "\n" matches the end of a line. */ | |
| 745 EMIT(NFA_NEWL); | |
| 746 regflags |= RF_HASNL; | |
| 747 } | |
| 748 break; | |
| 749 | |
| 750 case Magic('('): | |
| 751 if (nfa_reg(REG_PAREN) == FAIL) | |
| 752 return FAIL; /* cascaded error */ | |
| 753 break; | |
| 754 | |
| 755 case Magic('|'): | |
| 756 case Magic('&'): | |
| 757 case Magic(')'): | |
| 758 syntax_error = TRUE; | |
| 4450 | 759 EMSGN(_(e_misplaced), no_Magic(c)); |
| 4444 | 760 return FAIL; |
| 761 | |
| 762 case Magic('='): | |
| 763 case Magic('?'): | |
| 764 case Magic('+'): | |
| 765 case Magic('@'): | |
| 766 case Magic('*'): | |
| 767 case Magic('{'): | |
| 768 /* these should follow an atom, not form an atom */ | |
| 769 syntax_error = TRUE; | |
| 4450 | 770 EMSGN(_(e_misplaced), no_Magic(c)); |
| 4444 | 771 return FAIL; |
| 772 | |
| 773 case Magic('~'): /* previous substitute pattern */ | |
|
4571
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
774 /* TODO: Not supported yet */ |
| 4444 | 775 return FAIL; |
| 776 | |
|
4647
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
777 case Magic('1'): |
|
857f6c53f117
updated for version 7.3.1071
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parents:
4615
diff
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|
778 case Magic('2'): |
|
857f6c53f117
updated for version 7.3.1071
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parents:
4615
diff
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|
779 case Magic('3'): |
|
857f6c53f117
updated for version 7.3.1071
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diff
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|
780 case Magic('4'): |
|
857f6c53f117
updated for version 7.3.1071
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parents:
4615
diff
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|
781 case Magic('5'): |
|
857f6c53f117
updated for version 7.3.1071
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4615
diff
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|
782 case Magic('6'): |
|
857f6c53f117
updated for version 7.3.1071
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4615
diff
changeset
|
783 case Magic('7'): |
|
857f6c53f117
updated for version 7.3.1071
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4615
diff
changeset
|
784 case Magic('8'): |
|
857f6c53f117
updated for version 7.3.1071
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parents:
4615
diff
changeset
|
785 case Magic('9'): |
|
857f6c53f117
updated for version 7.3.1071
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parents:
4615
diff
changeset
|
786 EMIT(NFA_BACKREF1 + (no_Magic(c) - '1')); |
|
857f6c53f117
updated for version 7.3.1071
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4615
diff
changeset
|
787 nfa_has_backref = TRUE; |
|
857f6c53f117
updated for version 7.3.1071
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4615
diff
changeset
|
788 break; |
| 4444 | 789 |
| 790 case Magic('z'): | |
| 791 c = no_Magic(getchr()); | |
| 792 switch (c) | |
| 793 { | |
| 794 case 's': | |
| 795 EMIT(NFA_ZSTART); | |
| 796 break; | |
| 797 case 'e': | |
| 798 EMIT(NFA_ZEND); | |
| 799 nfa_has_zend = TRUE; | |
|
4569
f262fb02889d
updated for version 7.3.1032
Bram Moolenaar <bram@vim.org>
parents:
4567
diff
changeset
|
800 break; |
| 4444 | 801 case '1': |
| 802 case '2': | |
| 803 case '3': | |
| 804 case '4': | |
| 805 case '5': | |
| 806 case '6': | |
| 807 case '7': | |
| 808 case '8': | |
| 809 case '9': | |
| 810 case '(': | |
|
4571
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
811 /* TODO: \z1...\z9 and \z( not yet supported */ |
| 4444 | 812 return FAIL; |
| 813 default: | |
| 814 syntax_error = TRUE; | |
| 4450 | 815 EMSGN(_("E867: (NFA) Unknown operator '\\z%c'"), |
| 4444 | 816 no_Magic(c)); |
| 817 return FAIL; | |
| 818 } | |
| 819 break; | |
| 820 | |
| 821 case Magic('%'): | |
| 822 c = no_Magic(getchr()); | |
| 823 switch (c) | |
| 824 { | |
| 825 /* () without a back reference */ | |
| 826 case '(': | |
| 827 if (nfa_reg(REG_NPAREN) == FAIL) | |
| 828 return FAIL; | |
| 829 EMIT(NFA_NOPEN); | |
| 830 break; | |
| 831 | |
| 832 case 'd': /* %d123 decimal */ | |
| 833 case 'o': /* %o123 octal */ | |
| 834 case 'x': /* %xab hex 2 */ | |
| 835 case 'u': /* %uabcd hex 4 */ | |
| 836 case 'U': /* %U1234abcd hex 8 */ | |
|
4543
08ac46980953
updated for version 7.3.1019
Bram Moolenaar <bram@vim.org>
parents:
4541
diff
changeset
|
837 { |
|
4549
849180347ac3
updated for version 7.3.1022
Bram Moolenaar <bram@vim.org>
parents:
4547
diff
changeset
|
838 int nr; |
|
4543
08ac46980953
updated for version 7.3.1019
Bram Moolenaar <bram@vim.org>
parents:
4541
diff
changeset
|
839 |
|
08ac46980953
updated for version 7.3.1019
Bram Moolenaar <bram@vim.org>
parents:
4541
diff
changeset
|
840 switch (c) |
|
08ac46980953
updated for version 7.3.1019
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parents:
4541
diff
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|
841 { |
|
4549
849180347ac3
updated for version 7.3.1022
Bram Moolenaar <bram@vim.org>
parents:
4547
diff
changeset
|
842 case 'd': nr = getdecchrs(); break; |
|
849180347ac3
updated for version 7.3.1022
Bram Moolenaar <bram@vim.org>
parents:
4547
diff
changeset
|
843 case 'o': nr = getoctchrs(); break; |
|
849180347ac3
updated for version 7.3.1022
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4547
diff
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|
844 case 'x': nr = gethexchrs(2); break; |
|
849180347ac3
updated for version 7.3.1022
Bram Moolenaar <bram@vim.org>
parents:
4547
diff
changeset
|
845 case 'u': nr = gethexchrs(4); break; |
|
849180347ac3
updated for version 7.3.1022
Bram Moolenaar <bram@vim.org>
parents:
4547
diff
changeset
|
846 case 'U': nr = gethexchrs(8); break; |
|
849180347ac3
updated for version 7.3.1022
Bram Moolenaar <bram@vim.org>
parents:
4547
diff
changeset
|
847 default: nr = -1; break; |
|
4543
08ac46980953
updated for version 7.3.1019
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parents:
4541
diff
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|
848 } |
|
08ac46980953
updated for version 7.3.1019
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4541
diff
changeset
|
849 |
|
4549
849180347ac3
updated for version 7.3.1022
Bram Moolenaar <bram@vim.org>
parents:
4547
diff
changeset
|
850 if (nr < 0) |
|
4543
08ac46980953
updated for version 7.3.1019
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parents:
4541
diff
changeset
|
851 EMSG2_RET_FAIL( |
|
08ac46980953
updated for version 7.3.1019
Bram Moolenaar <bram@vim.org>
parents:
4541
diff
changeset
|
852 _("E678: Invalid character after %s%%[dxouU]"), |
|
08ac46980953
updated for version 7.3.1019
Bram Moolenaar <bram@vim.org>
parents:
4541
diff
changeset
|
853 reg_magic == MAGIC_ALL); |
|
08ac46980953
updated for version 7.3.1019
Bram Moolenaar <bram@vim.org>
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4541
diff
changeset
|
854 /* TODO: what if a composing character follows? */ |
|
4549
849180347ac3
updated for version 7.3.1022
Bram Moolenaar <bram@vim.org>
parents:
4547
diff
changeset
|
855 EMIT(nr); |
|
4543
08ac46980953
updated for version 7.3.1019
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parents:
4541
diff
changeset
|
856 } |
| 4444 | 857 break; |
| 858 | |
| 859 /* Catch \%^ and \%$ regardless of where they appear in the | |
| 860 * pattern -- regardless of whether or not it makes sense. */ | |
| 861 case '^': | |
| 862 EMIT(NFA_BOF); | |
| 863 break; | |
| 864 | |
| 865 case '$': | |
| 866 EMIT(NFA_EOF); | |
| 867 break; | |
| 868 | |
| 869 case '#': | |
|
4583
321cfbef9431
updated for version 7.3.1039
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4579
diff
changeset
|
870 EMIT(NFA_CURSOR); |
| 4444 | 871 break; |
| 872 | |
| 873 case 'V': | |
|
4571
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
874 /* TODO: not supported yet */ |
| 4444 | 875 return FAIL; |
| 876 break; | |
| 877 | |
| 878 case '[': | |
|
4571
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
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4569
diff
changeset
|
879 /* TODO: \%[abc] not supported yet */ |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
880 return FAIL; |
|
b2a8e3a66f8c
updated for version 7.3.1033
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4569
diff
changeset
|
881 |
| 4444 | 882 default: |
|
4583
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
883 { |
|
4655
779ca415f8e1
updated for version 7.3.1075
Bram Moolenaar <bram@vim.org>
parents:
4651
diff
changeset
|
884 int n = 0; |
|
4583
321cfbef9431
updated for version 7.3.1039
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parents:
4579
diff
changeset
|
885 int cmp = c; |
|
321cfbef9431
updated for version 7.3.1039
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parents:
4579
diff
changeset
|
886 |
|
321cfbef9431
updated for version 7.3.1039
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parents:
4579
diff
changeset
|
887 if (c == '<' || c == '>') |
|
321cfbef9431
updated for version 7.3.1039
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parents:
4579
diff
changeset
|
888 c = getchr(); |
|
321cfbef9431
updated for version 7.3.1039
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4579
diff
changeset
|
889 while (VIM_ISDIGIT(c)) |
|
321cfbef9431
updated for version 7.3.1039
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parents:
4579
diff
changeset
|
890 { |
|
321cfbef9431
updated for version 7.3.1039
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parents:
4579
diff
changeset
|
891 n = n * 10 + (c - '0'); |
|
321cfbef9431
updated for version 7.3.1039
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4579
diff
changeset
|
892 c = getchr(); |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
893 } |
|
321cfbef9431
updated for version 7.3.1039
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parents:
4579
diff
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|
894 if (c == 'l' || c == 'c' || c == 'v') |
|
321cfbef9431
updated for version 7.3.1039
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diff
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|
895 { |
|
321cfbef9431
updated for version 7.3.1039
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parents:
4579
diff
changeset
|
896 EMIT(n); |
|
321cfbef9431
updated for version 7.3.1039
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4579
diff
changeset
|
897 if (c == 'l') |
|
321cfbef9431
updated for version 7.3.1039
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4579
diff
changeset
|
898 EMIT(cmp == '<' ? NFA_LNUM_LT : |
|
321cfbef9431
updated for version 7.3.1039
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4579
diff
changeset
|
899 cmp == '>' ? NFA_LNUM_GT : NFA_LNUM); |
|
321cfbef9431
updated for version 7.3.1039
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diff
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|
900 else if (c == 'c') |
|
321cfbef9431
updated for version 7.3.1039
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4579
diff
changeset
|
901 EMIT(cmp == '<' ? NFA_COL_LT : |
|
321cfbef9431
updated for version 7.3.1039
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parents:
4579
diff
changeset
|
902 cmp == '>' ? NFA_COL_GT : NFA_COL); |
|
321cfbef9431
updated for version 7.3.1039
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parents:
4579
diff
changeset
|
903 else |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
904 EMIT(cmp == '<' ? NFA_VCOL_LT : |
|
321cfbef9431
updated for version 7.3.1039
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parents:
4579
diff
changeset
|
905 cmp == '>' ? NFA_VCOL_GT : NFA_VCOL); |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
906 break; |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
907 } |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
908 else if (c == '\'') |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
909 /* TODO: \%'m not supported yet */ |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
910 return FAIL; |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
911 } |
|
4571
b2a8e3a66f8c
updated for version 7.3.1033
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parents:
4569
diff
changeset
|
912 syntax_error = TRUE; |
|
b2a8e3a66f8c
updated for version 7.3.1033
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4569
diff
changeset
|
913 EMSGN(_("E867: (NFA) Unknown operator '\\%%%c'"), |
|
b2a8e3a66f8c
updated for version 7.3.1033
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4569
diff
changeset
|
914 no_Magic(c)); |
| 4444 | 915 return FAIL; |
| 916 } | |
| 917 break; | |
| 918 | |
| 919 case Magic('['): | |
|
4517
9a2183bd8295
updated for version 7.3.1006
Bram Moolenaar <bram@vim.org>
parents:
4515
diff
changeset
|
920 collection: |
| 4444 | 921 /* |
| 922 * Glue is emitted between several atoms from the []. | |
| 923 * It is either NFA_OR, or NFA_CONCAT. | |
| 924 * | |
| 925 * [abc] expands to 'a b NFA_OR c NFA_OR' (in postfix notation) | |
| 926 * [^abc] expands to 'a NFA_NOT b NFA_NOT NFA_CONCAT c NFA_NOT | |
| 927 * NFA_CONCAT NFA_END_NEG_RANGE NFA_CONCAT' (in postfix | |
| 928 * notation) | |
| 929 * | |
| 930 */ | |
| 931 | |
| 932 | |
| 933 /* Emit negation atoms, if needed. | |
| 934 * The CONCAT below merges the NOT with the previous node. */ | |
| 935 #define TRY_NEG() \ | |
| 936 if (negated == TRUE) \ | |
| 937 { \ | |
| 938 EMIT(NFA_NOT); \ | |
| 939 } | |
| 940 | |
| 941 /* Emit glue between important nodes : CONCAT or OR. */ | |
| 942 #define EMIT_GLUE() \ | |
| 943 if (first == FALSE) \ | |
| 944 EMIT(glue); \ | |
| 945 else \ | |
| 946 first = FALSE; | |
| 947 | |
| 948 p = regparse; | |
| 949 endp = skip_anyof(p); | |
| 950 if (*endp == ']') | |
| 951 { | |
| 952 /* | |
| 953 * Try to reverse engineer character classes. For example, | |
| 954 * recognize that [0-9] stands for \d and [A-Za-z_] with \h, | |
| 955 * and perform the necessary substitutions in the NFA. | |
| 956 */ | |
| 957 result = nfa_recognize_char_class(regparse, endp, | |
| 958 extra == ADD_NL); | |
| 959 if (result != FAIL) | |
| 960 { | |
| 961 if (result >= NFA_DIGIT && result <= NFA_NUPPER) | |
| 962 EMIT(result); | |
| 963 else /* must be char class + newline */ | |
| 964 { | |
| 965 EMIT(result - ADD_NL); | |
| 966 EMIT(NFA_NEWL); | |
| 967 EMIT(NFA_OR); | |
| 968 } | |
| 969 regparse = endp; | |
|
4573
37e444aeb33b
updated for version 7.3.1034
Bram Moolenaar <bram@vim.org>
parents:
4571
diff
changeset
|
970 mb_ptr_adv(regparse); |
| 4444 | 971 return OK; |
| 972 } | |
| 973 /* | |
| 974 * Failed to recognize a character class. Use the simple | |
| 975 * version that turns [abc] into 'a' OR 'b' OR 'c' | |
| 976 */ | |
| 977 startc = endc = oldstartc = -1; | |
| 978 first = TRUE; /* Emitting first atom in this sequence? */ | |
| 979 negated = FALSE; | |
| 980 glue = NFA_OR; | |
| 981 if (*regparse == '^') /* negated range */ | |
| 982 { | |
| 983 negated = TRUE; | |
| 984 glue = NFA_CONCAT; | |
|
4573
37e444aeb33b
updated for version 7.3.1034
Bram Moolenaar <bram@vim.org>
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4571
diff
changeset
|
985 mb_ptr_adv(regparse); |
| 4444 | 986 } |
| 987 if (*regparse == '-') | |
| 988 { | |
| 989 startc = '-'; | |
| 990 EMIT(startc); | |
| 991 TRY_NEG(); | |
| 992 EMIT_GLUE(); | |
|
4573
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4571
diff
changeset
|
993 mb_ptr_adv(regparse); |
| 4444 | 994 } |
| 995 /* Emit the OR branches for each character in the [] */ | |
| 996 emit_range = FALSE; | |
| 997 while (regparse < endp) | |
| 998 { | |
| 999 oldstartc = startc; | |
| 1000 startc = -1; | |
| 1001 got_coll_char = FALSE; | |
| 1002 if (*regparse == '[') | |
| 1003 { | |
| 1004 /* Check for [: :], [= =], [. .] */ | |
| 1005 equiclass = collclass = 0; | |
| 1006 charclass = get_char_class(®parse); | |
| 1007 if (charclass == CLASS_NONE) | |
| 1008 { | |
| 1009 equiclass = get_equi_class(®parse); | |
| 1010 if (equiclass == 0) | |
| 1011 collclass = get_coll_element(®parse); | |
| 1012 } | |
| 1013 | |
| 1014 /* Character class like [:alpha:] */ | |
| 1015 if (charclass != CLASS_NONE) | |
| 1016 { | |
| 1017 switch (charclass) | |
| 1018 { | |
| 1019 case CLASS_ALNUM: | |
| 1020 EMIT(NFA_CLASS_ALNUM); | |
| 1021 break; | |
| 1022 case CLASS_ALPHA: | |
| 1023 EMIT(NFA_CLASS_ALPHA); | |
| 1024 break; | |
| 1025 case CLASS_BLANK: | |
| 1026 EMIT(NFA_CLASS_BLANK); | |
| 1027 break; | |
| 1028 case CLASS_CNTRL: | |
| 1029 EMIT(NFA_CLASS_CNTRL); | |
| 1030 break; | |
| 1031 case CLASS_DIGIT: | |
| 1032 EMIT(NFA_CLASS_DIGIT); | |
| 1033 break; | |
| 1034 case CLASS_GRAPH: | |
| 1035 EMIT(NFA_CLASS_GRAPH); | |
| 1036 break; | |
| 1037 case CLASS_LOWER: | |
| 1038 EMIT(NFA_CLASS_LOWER); | |
| 1039 break; | |
| 1040 case CLASS_PRINT: | |
| 1041 EMIT(NFA_CLASS_PRINT); | |
| 1042 break; | |
| 1043 case CLASS_PUNCT: | |
| 1044 EMIT(NFA_CLASS_PUNCT); | |
| 1045 break; | |
| 1046 case CLASS_SPACE: | |
| 1047 EMIT(NFA_CLASS_SPACE); | |
| 1048 break; | |
| 1049 case CLASS_UPPER: | |
| 1050 EMIT(NFA_CLASS_UPPER); | |
| 1051 break; | |
| 1052 case CLASS_XDIGIT: | |
| 1053 EMIT(NFA_CLASS_XDIGIT); | |
| 1054 break; | |
| 1055 case CLASS_TAB: | |
| 1056 EMIT(NFA_CLASS_TAB); | |
| 1057 break; | |
| 1058 case CLASS_RETURN: | |
| 1059 EMIT(NFA_CLASS_RETURN); | |
| 1060 break; | |
| 1061 case CLASS_BACKSPACE: | |
| 1062 EMIT(NFA_CLASS_BACKSPACE); | |
| 1063 break; | |
| 1064 case CLASS_ESCAPE: | |
| 1065 EMIT(NFA_CLASS_ESCAPE); | |
| 1066 break; | |
| 1067 } | |
| 1068 TRY_NEG(); | |
| 1069 EMIT_GLUE(); | |
| 1070 continue; | |
| 1071 } | |
| 1072 /* Try equivalence class [=a=] and the like */ | |
| 1073 if (equiclass != 0) | |
| 1074 { | |
| 1075 result = nfa_emit_equi_class(equiclass, negated); | |
| 1076 if (result == FAIL) | |
| 1077 { | |
| 1078 /* should never happen */ | |
| 1079 EMSG_RET_FAIL(_("E868: Error building NFA with equivalence class!")); | |
| 1080 } | |
| 1081 EMIT_GLUE(); | |
| 1082 continue; | |
| 1083 } | |
| 1084 /* Try collating class like [. .] */ | |
| 1085 if (collclass != 0) | |
| 1086 { | |
| 1087 startc = collclass; /* allow [.a.]-x as a range */ | |
| 1088 /* Will emit the proper atom at the end of the | |
| 1089 * while loop. */ | |
| 1090 } | |
| 1091 } | |
|
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diff
changeset
|
1092 /* Try a range like 'a-x' or '\t-z'. Also allows '-' as a |
|
c1622ff9ed8d
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diff
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|
1093 * start character. */ |
|
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updated for version 7.3.1086
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diff
changeset
|
1094 if (*regparse == '-' && oldstartc != -1) |
| 4444 | 1095 { |
| 1096 emit_range = TRUE; | |
| 1097 startc = oldstartc; | |
|
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37e444aeb33b
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diff
changeset
|
1098 mb_ptr_adv(regparse); |
| 4444 | 1099 continue; /* reading the end of the range */ |
| 1100 } | |
| 1101 | |
| 1102 /* Now handle simple and escaped characters. | |
| 1103 * Only "\]", "\^", "\]" and "\\" are special in Vi. Vim | |
| 1104 * accepts "\t", "\e", etc., but only when the 'l' flag in | |
| 1105 * 'cpoptions' is not included. | |
| 1106 * Posix doesn't recognize backslash at all. | |
| 1107 */ | |
| 1108 if (*regparse == '\\' | |
| 1109 && !cpo_bsl | |
| 1110 && regparse + 1 <= endp | |
| 1111 && (vim_strchr(REGEXP_INRANGE, regparse[1]) != NULL | |
| 1112 || (!cpo_lit | |
| 1113 && vim_strchr(REGEXP_ABBR, regparse[1]) | |
| 1114 != NULL) | |
| 1115 ) | |
| 1116 ) | |
| 1117 { | |
|
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4571
diff
changeset
|
1118 mb_ptr_adv(regparse); |
| 4444 | 1119 |
|
4507
9dbbddb2ed10
updated for version 7.3.1001
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4503
diff
changeset
|
1120 if (*regparse == 'n') |
| 4444 | 1121 startc = reg_string ? NL : NFA_NEWL; |
| 1122 else | |
| 1123 if (*regparse == 'd' | |
| 1124 || *regparse == 'o' | |
| 1125 || *regparse == 'x' | |
| 1126 || *regparse == 'u' | |
| 1127 || *regparse == 'U' | |
| 1128 ) | |
| 1129 { | |
| 1130 /* TODO(RE) This needs more testing */ | |
| 1131 startc = coll_get_char(); | |
| 1132 got_coll_char = TRUE; | |
|
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diff
changeset
|
1133 mb_ptr_back(old_regparse, regparse); |
| 4444 | 1134 } |
| 1135 else | |
| 1136 { | |
| 1137 /* \r,\t,\e,\b */ | |
| 1138 startc = backslash_trans(*regparse); | |
| 1139 } | |
| 1140 } | |
| 1141 | |
| 1142 /* Normal printable char */ | |
| 1143 if (startc == -1) | |
|
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diff
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|
1144 startc = PTR2CHAR(regparse); |
| 4444 | 1145 |
| 1146 /* Previous char was '-', so this char is end of range. */ | |
| 1147 if (emit_range) | |
| 1148 { | |
|
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4675
diff
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|
1149 endc = startc; |
|
c1622ff9ed8d
updated for version 7.3.1086
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diff
changeset
|
1150 startc = oldstartc; |
| 4444 | 1151 if (startc > endc) |
| 1152 EMSG_RET_FAIL(_(e_invrange)); | |
| 1153 #ifdef FEAT_MBYTE | |
| 1154 if (has_mbyte && ((*mb_char2len)(startc) > 1 | |
| 1155 || (*mb_char2len)(endc) > 1)) | |
| 1156 { | |
| 1157 if (endc > startc + 256) | |
| 1158 EMSG_RET_FAIL(_(e_invrange)); | |
| 1159 /* Emit the range. "startc" was already emitted, so | |
| 1160 * skip it. */ | |
| 1161 for (c = startc + 1; c <= endc; c++) | |
| 1162 { | |
|
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diff
changeset
|
1163 EMIT(c); |
| 4444 | 1164 TRY_NEG(); |
| 1165 EMIT_GLUE(); | |
| 1166 } | |
| 1167 } | |
| 1168 else | |
| 1169 #endif | |
| 1170 { | |
| 1171 #ifdef EBCDIC | |
| 1172 int alpha_only = FALSE; | |
| 1173 | |
| 1174 /* for alphabetical range skip the gaps | |
| 1175 * 'i'-'j', 'r'-'s', 'I'-'J' and 'R'-'S'. */ | |
| 1176 if (isalpha(startc) && isalpha(endc)) | |
| 1177 alpha_only = TRUE; | |
| 1178 #endif | |
| 1179 /* Emit the range. "startc" was already emitted, so | |
| 1180 * skip it. */ | |
| 1181 for (c = startc + 1; c <= endc; c++) | |
| 1182 #ifdef EBCDIC | |
| 1183 if (!alpha_only || isalpha(startc)) | |
| 1184 #endif | |
| 1185 { | |
| 1186 EMIT(c); | |
| 1187 TRY_NEG(); | |
| 1188 EMIT_GLUE(); | |
| 1189 } | |
| 1190 } | |
|
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|
1191 emit_range = FALSE; |
|
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|
1192 startc = -1; |
| 4444 | 1193 } |
| 1194 else | |
| 1195 { | |
| 1196 /* | |
| 1197 * This char (startc) is not part of a range. Just | |
| 1198 * emit it. | |
| 1199 * | |
| 1200 * Normally, simply emit startc. But if we get char | |
| 1201 * code=0 from a collating char, then replace it with | |
| 1202 * 0x0a. | |
| 1203 * | |
| 1204 * This is needed to completely mimic the behaviour of | |
| 1205 * the backtracking engine. | |
| 1206 */ | |
| 1207 if (got_coll_char == TRUE && startc == 0) | |
| 1208 EMIT(0x0a); | |
| 1209 else | |
|
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|
1210 EMIT(startc); |
| 4444 | 1211 TRY_NEG(); |
| 1212 EMIT_GLUE(); | |
| 1213 } | |
| 1214 | |
|
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diff
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|
1215 mb_ptr_adv(regparse); |
| 4444 | 1216 } /* while (p < endp) */ |
| 1217 | |
|
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diff
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|
1218 mb_ptr_back(old_regparse, regparse); |
| 4444 | 1219 if (*regparse == '-') /* if last, '-' is just a char */ |
| 1220 { | |
| 1221 EMIT('-'); | |
| 1222 TRY_NEG(); | |
| 1223 EMIT_GLUE(); | |
| 1224 } | |
|
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diff
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|
1225 mb_ptr_adv(regparse); |
| 4444 | 1226 |
| 1227 /* skip the trailing ] */ | |
| 1228 regparse = endp; | |
|
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diff
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|
1229 mb_ptr_adv(regparse); |
| 4444 | 1230 if (negated == TRUE) |
| 1231 { | |
| 1232 /* Mark end of negated char range */ | |
| 1233 EMIT(NFA_END_NEG_RANGE); | |
| 1234 EMIT(NFA_CONCAT); | |
| 1235 } | |
|
4615
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updated for version 7.3.1055
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diff
changeset
|
1236 |
|
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updated for version 7.3.1055
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diff
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|
1237 /* \_[] also matches \n but it's not negated */ |
|
5679b8ddd8cc
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diff
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|
1238 if (extra == ADD_NL) |
|
5679b8ddd8cc
updated for version 7.3.1055
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|
1239 { |
|
5679b8ddd8cc
updated for version 7.3.1055
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|
1240 EMIT(reg_string ? NL : NFA_NEWL); |
|
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diff
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|
1241 EMIT(NFA_OR); |
|
5679b8ddd8cc
updated for version 7.3.1055
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diff
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|
1242 } |
|
5679b8ddd8cc
updated for version 7.3.1055
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4583
diff
changeset
|
1243 |
| 4444 | 1244 return OK; |
|
4529
432a6b8c7d93
updated for version 7.3.1012
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4527
diff
changeset
|
1245 } /* if exists closing ] */ |
|
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diff
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|
1246 |
|
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|
1247 if (reg_strict) |
| 4444 | 1248 { |
| 1249 syntax_error = TRUE; | |
| 1250 EMSG_RET_FAIL(_(e_missingbracket)); | |
| 1251 } | |
|
4529
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updated for version 7.3.1012
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changeset
|
1252 /* FALLTHROUGH */ |
|
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diff
changeset
|
1253 |
| 4444 | 1254 default: |
| 1255 { | |
| 1256 #ifdef FEAT_MBYTE | |
| 1257 int plen; | |
| 1258 | |
| 1259 nfa_do_multibyte: | |
|
4543
08ac46980953
updated for version 7.3.1019
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parents:
4541
diff
changeset
|
1260 /* plen is length of current char with composing chars */ |
|
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4541
diff
changeset
|
1261 if (enc_utf8 && ((*mb_char2len)(c) |
|
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4541
diff
changeset
|
1262 != (plen = (*mb_ptr2len)(old_regparse)) |
|
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updated for version 7.3.1019
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4541
diff
changeset
|
1263 || utf_iscomposing(c))) |
| 4444 | 1264 { |
|
4549
849180347ac3
updated for version 7.3.1022
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4547
diff
changeset
|
1265 int i = 0; |
|
849180347ac3
updated for version 7.3.1022
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diff
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|
1266 |
|
4535
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updated for version 7.3.1015
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4533
diff
changeset
|
1267 /* A base character plus composing characters, or just one |
|
45f97c349537
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diff
changeset
|
1268 * or more composing characters. |
|
4527
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diff
changeset
|
1269 * This requires creating a separate atom as if enclosing |
|
55bcaa1d2749
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diff
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|
1270 * the characters in (), where NFA_COMPOSING is the ( and |
|
55bcaa1d2749
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diff
changeset
|
1271 * NFA_END_COMPOSING is the ). Note that right now we are |
| 4444 | 1272 * building the postfix form, not the NFA itself; |
| 1273 * a composing char could be: a, b, c, NFA_COMPOSING | |
|
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|
1274 * where 'b' and 'c' are chars with codes > 256. */ |
|
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diff
changeset
|
1275 for (;;) |
|
55bcaa1d2749
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changeset
|
1276 { |
|
55bcaa1d2749
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|
1277 EMIT(c); |
|
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|
1278 if (i > 0) |
|
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diff
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|
1279 EMIT(NFA_CONCAT); |
|
4529
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updated for version 7.3.1012
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|
1280 if ((i += utf_char2len(c)) >= plen) |
|
4527
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changeset
|
1281 break; |
|
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|
1282 c = utf_ptr2char(old_regparse + i); |
|
55bcaa1d2749
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|
1283 } |
|
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|
1284 EMIT(NFA_COMPOSING); |
| 4444 | 1285 regparse = old_regparse + plen; |
| 1286 } | |
| 1287 else | |
| 1288 #endif | |
| 1289 { | |
| 1290 c = no_Magic(c); | |
| 1291 EMIT(c); | |
| 1292 } | |
| 1293 return OK; | |
| 1294 } | |
| 1295 } | |
| 1296 | |
| 1297 #undef TRY_NEG | |
| 1298 #undef EMIT_GLUE | |
| 1299 | |
| 1300 return OK; | |
| 1301 } | |
| 1302 | |
| 1303 /* | |
| 1304 * Parse something followed by possible [*+=]. | |
| 1305 * | |
| 1306 * A piece is an atom, possibly followed by a multi, an indication of how many | |
| 1307 * times the atom can be matched. Example: "a*" matches any sequence of "a" | |
| 1308 * characters: "", "a", "aa", etc. | |
| 1309 * | |
| 1310 * piece ::= atom | |
| 1311 * or atom multi | |
| 1312 */ | |
| 1313 static int | |
| 1314 nfa_regpiece() | |
| 1315 { | |
| 1316 int i; | |
| 1317 int op; | |
| 1318 int ret; | |
| 1319 long minval, maxval; | |
| 1320 int greedy = TRUE; /* Braces are prefixed with '-' ? */ | |
|
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|
1321 parse_state_T old_state; |
|
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changeset
|
1322 parse_state_T new_state; |
| 4444 | 1323 int c2; |
|
4651
f10f63aaec5c
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parents:
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diff
changeset
|
1324 int old_post_pos; |
|
f10f63aaec5c
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4649
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changeset
|
1325 int my_post_start; |
| 4444 | 1326 int quest; |
| 1327 | |
|
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diff
changeset
|
1328 /* Save the current parse state, so that we can use it if <atom>{m,n} is |
|
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changeset
|
1329 * next. */ |
|
4d92b873acef
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|
1330 save_parse_state(&old_state); |
|
4d92b873acef
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changeset
|
1331 |
| 4444 | 1332 /* store current pos in the postfix form, for \{m,n} involving 0s */ |
|
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1333 my_post_start = (int)(post_ptr - post_start); |
| 4444 | 1334 |
| 1335 ret = nfa_regatom(); | |
| 1336 if (ret == FAIL) | |
| 1337 return FAIL; /* cascaded error */ | |
| 1338 | |
| 1339 op = peekchr(); | |
| 1340 if (re_multi_type(op) == NOT_MULTI) | |
| 1341 return OK; | |
| 1342 | |
| 1343 skipchr(); | |
| 1344 switch (op) | |
| 1345 { | |
| 1346 case Magic('*'): | |
| 1347 EMIT(NFA_STAR); | |
| 1348 break; | |
| 1349 | |
| 1350 case Magic('+'): | |
| 1351 /* | |
| 1352 * Trick: Normally, (a*)\+ would match the whole input "aaa". The | |
| 1353 * first and only submatch would be "aaa". But the backtracking | |
| 1354 * engine interprets the plus as "try matching one more time", and | |
| 1355 * a* matches a second time at the end of the input, the empty | |
| 1356 * string. | |
| 1357 * The submatch will the empty string. | |
| 1358 * | |
|
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1359 * In order to be consistent with the old engine, we replace |
|
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1360 * <atom>+ with <atom><atom>* |
| 4444 | 1361 */ |
|
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1362 restore_parse_state(&old_state); |
| 4444 | 1363 curchr = -1; |
| 1364 if (nfa_regatom() == FAIL) | |
| 1365 return FAIL; | |
| 1366 EMIT(NFA_STAR); | |
| 1367 EMIT(NFA_CONCAT); | |
| 1368 skipchr(); /* skip the \+ */ | |
| 1369 break; | |
| 1370 | |
| 1371 case Magic('@'): | |
| 1372 op = no_Magic(getchr()); | |
| 1373 switch(op) | |
| 1374 { | |
| 1375 case '=': | |
| 1376 EMIT(NFA_PREV_ATOM_NO_WIDTH); | |
| 1377 break; | |
|
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1378 case '!': |
|
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1379 EMIT(NFA_PREV_ATOM_NO_WIDTH_NEG); |
|
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1380 break; |
|
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1381 case '0': |
|
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1382 case '1': |
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1383 case '2': |
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1384 case '3': |
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1385 case '4': |
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1386 case '5': |
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1387 case '6': |
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1388 case '7': |
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1389 case '8': |
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1390 case '9': |
| 4444 | 1391 case '<': |
| 1392 case '>': | |
| 1393 /* Not supported yet */ | |
| 1394 return FAIL; | |
| 1395 default: | |
| 1396 syntax_error = TRUE; | |
| 4450 | 1397 EMSGN(_("E869: (NFA) Unknown operator '\\@%c'"), op); |
| 4444 | 1398 return FAIL; |
| 1399 } | |
| 1400 break; | |
| 1401 | |
| 1402 case Magic('?'): | |
| 1403 case Magic('='): | |
| 1404 EMIT(NFA_QUEST); | |
| 1405 break; | |
| 1406 | |
| 1407 case Magic('{'): | |
| 1408 /* a{2,5} will expand to 'aaa?a?a?' | |
| 1409 * a{-1,3} will expand to 'aa??a??', where ?? is the nongreedy | |
| 1410 * version of '?' | |
| 1411 * \v(ab){2,3} will expand to '(ab)(ab)(ab)?', where all the | |
| 1412 * parenthesis have the same id | |
| 1413 */ | |
| 1414 | |
| 1415 greedy = TRUE; | |
| 1416 c2 = peekchr(); | |
| 1417 if (c2 == '-' || c2 == Magic('-')) | |
| 1418 { | |
| 1419 skipchr(); | |
| 1420 greedy = FALSE; | |
| 1421 } | |
| 1422 if (!read_limits(&minval, &maxval)) | |
| 1423 { | |
| 1424 syntax_error = TRUE; | |
| 1425 EMSG_RET_FAIL(_("E870: (NFA regexp) Error reading repetition limits")); | |
| 1426 } | |
| 1427 /* <atom>{0,inf}, <atom>{0,} and <atom>{} are equivalent to | |
| 1428 * <atom>* */ | |
|
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1429 if (minval == 0 && maxval == MAX_LIMIT) |
| 4444 | 1430 { |
|
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1431 if (greedy) |
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1432 /* \{}, \{0,} */ |
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1433 EMIT(NFA_STAR); |
|
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1434 else |
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1435 /* \{-}, \{-0,} */ |
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1436 EMIT(NFA_STAR_NONGREEDY); |
| 4444 | 1437 break; |
| 1438 } | |
| 1439 | |
| 1440 /* Special case: x{0} or x{-0} */ | |
| 1441 if (maxval == 0) | |
| 1442 { | |
| 1443 /* Ignore result of previous call to nfa_regatom() */ | |
|
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1444 post_ptr = post_start + my_post_start; |
| 4444 | 1445 /* NFA_SKIP_CHAR has 0-length and works everywhere */ |
| 1446 EMIT(NFA_SKIP_CHAR); | |
| 1447 return OK; | |
| 1448 } | |
| 1449 | |
| 1450 /* Ignore previous call to nfa_regatom() */ | |
|
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1451 post_ptr = post_start + my_post_start; |
|
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1452 /* Save parse state after the repeated atom and the \{} */ |
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1453 save_parse_state(&new_state); |
| 4444 | 1454 |
| 1455 quest = (greedy == TRUE? NFA_QUEST : NFA_QUEST_NONGREEDY); | |
| 1456 for (i = 0; i < maxval; i++) | |
| 1457 { | |
| 1458 /* Goto beginning of the repeated atom */ | |
|
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1459 restore_parse_state(&old_state); |
|
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1460 old_post_pos = (int)(post_ptr - post_start); |
| 4444 | 1461 if (nfa_regatom() == FAIL) |
| 1462 return FAIL; | |
| 1463 /* after "minval" times, atoms are optional */ | |
| 1464 if (i + 1 > minval) | |
|
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1465 { |
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1466 if (maxval == MAX_LIMIT) |
|
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1467 { |
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1468 if (greedy) |
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1469 EMIT(NFA_STAR); |
|
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1470 else |
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1471 EMIT(NFA_STAR_NONGREEDY); |
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1472 } |
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1473 else |
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1474 EMIT(quest); |
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1475 } |
|
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1476 if (old_post_pos != my_post_start) |
| 4444 | 1477 EMIT(NFA_CONCAT); |
|
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1478 if (i + 1 > minval && maxval == MAX_LIMIT) |
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1479 break; |
| 4444 | 1480 } |
| 1481 | |
| 1482 /* Go to just after the repeated atom and the \{} */ | |
|
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|
1483 restore_parse_state(&new_state); |
| 4444 | 1484 curchr = -1; |
| 1485 | |
| 1486 break; | |
| 1487 | |
| 1488 | |
| 1489 default: | |
| 1490 break; | |
| 1491 } /* end switch */ | |
| 1492 | |
| 1493 if (re_multi_type(peekchr()) != NOT_MULTI) | |
| 1494 { | |
| 1495 /* Can't have a multi follow a multi. */ | |
| 1496 syntax_error = TRUE; | |
| 1497 EMSG_RET_FAIL(_("E871: (NFA regexp) Can't have a multi follow a multi !")); | |
| 1498 } | |
| 1499 | |
| 1500 return OK; | |
| 1501 } | |
| 1502 | |
| 1503 /* | |
| 1504 * Parse one or more pieces, concatenated. It matches a match for the | |
| 1505 * first piece, followed by a match for the second piece, etc. Example: | |
| 1506 * "f[0-9]b", first matches "f", then a digit and then "b". | |
| 1507 * | |
| 1508 * concat ::= piece | |
| 1509 * or piece piece | |
| 1510 * or piece piece piece | |
| 1511 * etc. | |
| 1512 */ | |
| 1513 static int | |
| 1514 nfa_regconcat() | |
| 1515 { | |
| 1516 int cont = TRUE; | |
| 1517 int first = TRUE; | |
| 1518 | |
| 1519 while (cont) | |
| 1520 { | |
| 1521 switch (peekchr()) | |
| 1522 { | |
| 1523 case NUL: | |
| 1524 case Magic('|'): | |
| 1525 case Magic('&'): | |
| 1526 case Magic(')'): | |
| 1527 cont = FALSE; | |
| 1528 break; | |
| 1529 | |
| 1530 case Magic('Z'): | |
| 1531 #ifdef FEAT_MBYTE | |
| 1532 regflags |= RF_ICOMBINE; | |
| 1533 #endif | |
| 1534 skipchr_keepstart(); | |
| 1535 break; | |
| 1536 case Magic('c'): | |
| 1537 regflags |= RF_ICASE; | |
| 1538 skipchr_keepstart(); | |
| 1539 break; | |
| 1540 case Magic('C'): | |
| 1541 regflags |= RF_NOICASE; | |
| 1542 skipchr_keepstart(); | |
| 1543 break; | |
| 1544 case Magic('v'): | |
| 1545 reg_magic = MAGIC_ALL; | |
| 1546 skipchr_keepstart(); | |
| 1547 curchr = -1; | |
| 1548 break; | |
| 1549 case Magic('m'): | |
| 1550 reg_magic = MAGIC_ON; | |
| 1551 skipchr_keepstart(); | |
| 1552 curchr = -1; | |
| 1553 break; | |
| 1554 case Magic('M'): | |
| 1555 reg_magic = MAGIC_OFF; | |
| 1556 skipchr_keepstart(); | |
| 1557 curchr = -1; | |
| 1558 break; | |
| 1559 case Magic('V'): | |
| 1560 reg_magic = MAGIC_NONE; | |
| 1561 skipchr_keepstart(); | |
| 1562 curchr = -1; | |
| 1563 break; | |
| 1564 | |
| 1565 default: | |
| 1566 if (nfa_regpiece() == FAIL) | |
| 1567 return FAIL; | |
| 1568 if (first == FALSE) | |
| 1569 EMIT(NFA_CONCAT); | |
| 1570 else | |
| 1571 first = FALSE; | |
| 1572 break; | |
| 1573 } | |
| 1574 } | |
| 1575 | |
| 1576 return OK; | |
| 1577 } | |
| 1578 | |
| 1579 /* | |
| 1580 * Parse a branch, one or more concats, separated by "\&". It matches the | |
| 1581 * last concat, but only if all the preceding concats also match at the same | |
| 1582 * position. Examples: | |
| 1583 * "foobeep\&..." matches "foo" in "foobeep". | |
| 1584 * ".*Peter\&.*Bob" matches in a line containing both "Peter" and "Bob" | |
| 1585 * | |
| 1586 * branch ::= concat | |
| 1587 * or concat \& concat | |
| 1588 * or concat \& concat \& concat | |
| 1589 * etc. | |
| 1590 */ | |
| 1591 static int | |
| 1592 nfa_regbranch() | |
| 1593 { | |
| 1594 int ch; | |
|
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1595 int old_post_pos; |
|
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1596 |
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|
1597 old_post_pos = (int)(post_ptr - post_start); |
| 4444 | 1598 |
| 1599 /* First branch, possibly the only one */ | |
| 1600 if (nfa_regconcat() == FAIL) | |
| 1601 return FAIL; | |
| 1602 | |
| 1603 ch = peekchr(); | |
| 1604 /* Try next concats */ | |
| 1605 while (ch == Magic('&')) | |
| 1606 { | |
| 1607 skipchr(); | |
| 1608 EMIT(NFA_NOPEN); | |
| 1609 EMIT(NFA_PREV_ATOM_NO_WIDTH); | |
|
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|
1610 old_post_pos = (int)(post_ptr - post_start); |
| 4444 | 1611 if (nfa_regconcat() == FAIL) |
| 1612 return FAIL; | |
| 1613 /* if concat is empty, skip a input char. But do emit a node */ | |
|
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1614 if (old_post_pos == (int)(post_ptr - post_start)) |
| 4444 | 1615 EMIT(NFA_SKIP_CHAR); |
| 1616 EMIT(NFA_CONCAT); | |
| 1617 ch = peekchr(); | |
| 1618 } | |
| 1619 | |
| 1620 /* Even if a branch is empty, emit one node for it */ | |
|
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1621 if (old_post_pos == (int)(post_ptr - post_start)) |
| 4444 | 1622 EMIT(NFA_SKIP_CHAR); |
| 1623 | |
| 1624 return OK; | |
| 1625 } | |
| 1626 | |
| 1627 /* | |
| 1628 * Parse a pattern, one or more branches, separated by "\|". It matches | |
| 1629 * anything that matches one of the branches. Example: "foo\|beep" matches | |
| 1630 * "foo" and matches "beep". If more than one branch matches, the first one | |
| 1631 * is used. | |
| 1632 * | |
| 1633 * pattern ::= branch | |
| 1634 * or branch \| branch | |
| 1635 * or branch \| branch \| branch | |
| 1636 * etc. | |
| 1637 */ | |
| 1638 static int | |
| 1639 nfa_reg(paren) | |
| 1640 int paren; /* REG_NOPAREN, REG_PAREN, REG_NPAREN or REG_ZPAREN */ | |
| 1641 { | |
| 1642 int parno = 0; | |
| 1643 | |
| 1644 #ifdef FEAT_SYN_HL | |
| 1645 #endif | |
| 1646 if (paren == REG_PAREN) | |
| 1647 { | |
| 1648 if (regnpar >= NSUBEXP) /* Too many `(' */ | |
| 1649 { | |
| 1650 syntax_error = TRUE; | |
| 1651 EMSG_RET_FAIL(_("E872: (NFA regexp) Too many '('")); | |
| 1652 } | |
| 1653 parno = regnpar++; | |
| 1654 } | |
| 1655 | |
| 1656 if (nfa_regbranch() == FAIL) | |
| 1657 return FAIL; /* cascaded error */ | |
| 1658 | |
| 1659 while (peekchr() == Magic('|')) | |
| 1660 { | |
| 1661 skipchr(); | |
| 1662 if (nfa_regbranch() == FAIL) | |
| 1663 return FAIL; /* cascaded error */ | |
| 1664 EMIT(NFA_OR); | |
| 1665 } | |
| 1666 | |
| 1667 /* Check for proper termination. */ | |
| 1668 if (paren != REG_NOPAREN && getchr() != Magic(')')) | |
| 1669 { | |
| 1670 syntax_error = TRUE; | |
| 1671 if (paren == REG_NPAREN) | |
| 1672 EMSG2_RET_FAIL(_(e_unmatchedpp), reg_magic == MAGIC_ALL); | |
| 1673 else | |
| 1674 EMSG2_RET_FAIL(_(e_unmatchedp), reg_magic == MAGIC_ALL); | |
| 1675 } | |
| 1676 else if (paren == REG_NOPAREN && peekchr() != NUL) | |
| 1677 { | |
| 1678 syntax_error = TRUE; | |
| 1679 if (peekchr() == Magic(')')) | |
| 1680 EMSG2_RET_FAIL(_(e_unmatchedpar), reg_magic == MAGIC_ALL); | |
| 1681 else | |
| 1682 EMSG_RET_FAIL(_("E873: (NFA regexp) proper termination error")); | |
| 1683 } | |
| 1684 /* | |
| 1685 * Here we set the flag allowing back references to this set of | |
| 1686 * parentheses. | |
| 1687 */ | |
| 1688 if (paren == REG_PAREN) | |
| 1689 { | |
| 1690 had_endbrace[parno] = TRUE; /* have seen the close paren */ | |
| 1691 EMIT(NFA_MOPEN + parno); | |
| 1692 } | |
| 1693 | |
| 1694 return OK; | |
| 1695 } | |
| 1696 | |
| 1697 #ifdef DEBUG | |
| 1698 static char_u code[50]; | |
| 1699 | |
| 1700 static void | |
| 1701 nfa_set_code(c) | |
| 1702 int c; | |
| 1703 { | |
| 1704 int addnl = FALSE; | |
| 1705 | |
| 1706 if (c >= NFA_FIRST_NL && c <= NFA_LAST_NL) | |
| 1707 { | |
| 1708 addnl = TRUE; | |
| 1709 c -= ADD_NL; | |
| 1710 } | |
| 1711 | |
| 1712 STRCPY(code, ""); | |
| 1713 switch (c) | |
| 1714 { | |
| 1715 case NFA_MATCH: STRCPY(code, "NFA_MATCH "); break; | |
| 1716 case NFA_SPLIT: STRCPY(code, "NFA_SPLIT "); break; | |
| 1717 case NFA_CONCAT: STRCPY(code, "NFA_CONCAT "); break; | |
| 1718 case NFA_NEWL: STRCPY(code, "NFA_NEWL "); break; | |
| 1719 case NFA_ZSTART: STRCPY(code, "NFA_ZSTART"); break; | |
| 1720 case NFA_ZEND: STRCPY(code, "NFA_ZEND"); break; | |
| 1721 | |
|
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1722 case NFA_BACKREF1: STRCPY(code, "NFA_BACKREF1"); break; |
|
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1723 case NFA_BACKREF2: STRCPY(code, "NFA_BACKREF2"); break; |
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1724 case NFA_BACKREF3: STRCPY(code, "NFA_BACKREF3"); break; |
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1725 case NFA_BACKREF4: STRCPY(code, "NFA_BACKREF4"); break; |
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1726 case NFA_BACKREF5: STRCPY(code, "NFA_BACKREF5"); break; |
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1727 case NFA_BACKREF6: STRCPY(code, "NFA_BACKREF6"); break; |
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1728 case NFA_BACKREF7: STRCPY(code, "NFA_BACKREF7"); break; |
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1729 case NFA_BACKREF8: STRCPY(code, "NFA_BACKREF8"); break; |
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1730 case NFA_BACKREF9: STRCPY(code, "NFA_BACKREF9"); break; |
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1731 case NFA_SKIP: STRCPY(code, "NFA_SKIP"); break; |
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1732 |
| 4444 | 1733 case NFA_PREV_ATOM_NO_WIDTH: |
| 1734 STRCPY(code, "NFA_PREV_ATOM_NO_WIDTH"); break; | |
|
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1735 case NFA_PREV_ATOM_NO_WIDTH_NEG: |
|
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1736 STRCPY(code, "NFA_PREV_ATOM_NO_WIDTH_NEG"); break; |
|
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1737 case NFA_NOPEN: STRCPY(code, "NFA_NOPEN"); break; |
|
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1738 case NFA_NCLOSE: STRCPY(code, "NFA_NCLOSE"); break; |
| 4444 | 1739 case NFA_START_INVISIBLE: STRCPY(code, "NFA_START_INVISIBLE"); break; |
| 1740 case NFA_END_INVISIBLE: STRCPY(code, "NFA_END_INVISIBLE"); break; | |
| 1741 | |
| 1742 case NFA_COMPOSING: STRCPY(code, "NFA_COMPOSING"); break; | |
| 1743 case NFA_END_COMPOSING: STRCPY(code, "NFA_END_COMPOSING"); break; | |
| 1744 | |
| 1745 case NFA_MOPEN + 0: | |
| 1746 case NFA_MOPEN + 1: | |
| 1747 case NFA_MOPEN + 2: | |
| 1748 case NFA_MOPEN + 3: | |
| 1749 case NFA_MOPEN + 4: | |
| 1750 case NFA_MOPEN + 5: | |
| 1751 case NFA_MOPEN + 6: | |
| 1752 case NFA_MOPEN + 7: | |
| 1753 case NFA_MOPEN + 8: | |
| 1754 case NFA_MOPEN + 9: | |
| 1755 STRCPY(code, "NFA_MOPEN(x)"); | |
| 1756 code[10] = c - NFA_MOPEN + '0'; | |
| 1757 break; | |
| 1758 case NFA_MCLOSE + 0: | |
| 1759 case NFA_MCLOSE + 1: | |
| 1760 case NFA_MCLOSE + 2: | |
| 1761 case NFA_MCLOSE + 3: | |
| 1762 case NFA_MCLOSE + 4: | |
| 1763 case NFA_MCLOSE + 5: | |
| 1764 case NFA_MCLOSE + 6: | |
| 1765 case NFA_MCLOSE + 7: | |
| 1766 case NFA_MCLOSE + 8: | |
| 1767 case NFA_MCLOSE + 9: | |
| 1768 STRCPY(code, "NFA_MCLOSE(x)"); | |
| 1769 code[11] = c - NFA_MCLOSE + '0'; | |
| 1770 break; | |
| 1771 case NFA_EOL: STRCPY(code, "NFA_EOL "); break; | |
| 1772 case NFA_BOL: STRCPY(code, "NFA_BOL "); break; | |
| 1773 case NFA_EOW: STRCPY(code, "NFA_EOW "); break; | |
| 1774 case NFA_BOW: STRCPY(code, "NFA_BOW "); break; | |
|
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1775 case NFA_EOF: STRCPY(code, "NFA_EOF "); break; |
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1776 case NFA_BOF: STRCPY(code, "NFA_BOF "); break; |
| 4444 | 1777 case NFA_STAR: STRCPY(code, "NFA_STAR "); break; |
|
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1778 case NFA_STAR_NONGREEDY: STRCPY(code, "NFA_STAR_NONGREEDY "); break; |
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1779 case NFA_QUEST: STRCPY(code, "NFA_QUEST"); break; |
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1780 case NFA_QUEST_NONGREEDY: STRCPY(code, "NFA_QUEST_NON_GREEDY"); break; |
| 4444 | 1781 case NFA_NOT: STRCPY(code, "NFA_NOT "); break; |
| 1782 case NFA_SKIP_CHAR: STRCPY(code, "NFA_SKIP_CHAR"); break; | |
| 1783 case NFA_OR: STRCPY(code, "NFA_OR"); break; | |
| 1784 case NFA_END_NEG_RANGE: STRCPY(code, "NFA_END_NEG_RANGE"); break; | |
| 1785 case NFA_CLASS_ALNUM: STRCPY(code, "NFA_CLASS_ALNUM"); break; | |
| 1786 case NFA_CLASS_ALPHA: STRCPY(code, "NFA_CLASS_ALPHA"); break; | |
| 1787 case NFA_CLASS_BLANK: STRCPY(code, "NFA_CLASS_BLANK"); break; | |
| 1788 case NFA_CLASS_CNTRL: STRCPY(code, "NFA_CLASS_CNTRL"); break; | |
| 1789 case NFA_CLASS_DIGIT: STRCPY(code, "NFA_CLASS_DIGIT"); break; | |
| 1790 case NFA_CLASS_GRAPH: STRCPY(code, "NFA_CLASS_GRAPH"); break; | |
| 1791 case NFA_CLASS_LOWER: STRCPY(code, "NFA_CLASS_LOWER"); break; | |
| 1792 case NFA_CLASS_PRINT: STRCPY(code, "NFA_CLASS_PRINT"); break; | |
| 1793 case NFA_CLASS_PUNCT: STRCPY(code, "NFA_CLASS_PUNCT"); break; | |
| 1794 case NFA_CLASS_SPACE: STRCPY(code, "NFA_CLASS_SPACE"); break; | |
| 1795 case NFA_CLASS_UPPER: STRCPY(code, "NFA_CLASS_UPPER"); break; | |
| 1796 case NFA_CLASS_XDIGIT: STRCPY(code, "NFA_CLASS_XDIGIT"); break; | |
| 1797 case NFA_CLASS_TAB: STRCPY(code, "NFA_CLASS_TAB"); break; | |
| 1798 case NFA_CLASS_RETURN: STRCPY(code, "NFA_CLASS_RETURN"); break; | |
| 1799 case NFA_CLASS_BACKSPACE: STRCPY(code, "NFA_CLASS_BACKSPACE"); break; | |
| 1800 case NFA_CLASS_ESCAPE: STRCPY(code, "NFA_CLASS_ESCAPE"); break; | |
| 1801 | |
| 1802 case NFA_ANY: STRCPY(code, "NFA_ANY"); break; | |
| 1803 case NFA_IDENT: STRCPY(code, "NFA_IDENT"); break; | |
| 1804 case NFA_SIDENT:STRCPY(code, "NFA_SIDENT"); break; | |
| 1805 case NFA_KWORD: STRCPY(code, "NFA_KWORD"); break; | |
| 1806 case NFA_SKWORD:STRCPY(code, "NFA_SKWORD"); break; | |
| 1807 case NFA_FNAME: STRCPY(code, "NFA_FNAME"); break; | |
| 1808 case NFA_SFNAME:STRCPY(code, "NFA_SFNAME"); break; | |
| 1809 case NFA_PRINT: STRCPY(code, "NFA_PRINT"); break; | |
| 1810 case NFA_SPRINT:STRCPY(code, "NFA_SPRINT"); break; | |
| 1811 case NFA_WHITE: STRCPY(code, "NFA_WHITE"); break; | |
| 1812 case NFA_NWHITE:STRCPY(code, "NFA_NWHITE"); break; | |
| 1813 case NFA_DIGIT: STRCPY(code, "NFA_DIGIT"); break; | |
| 1814 case NFA_NDIGIT:STRCPY(code, "NFA_NDIGIT"); break; | |
| 1815 case NFA_HEX: STRCPY(code, "NFA_HEX"); break; | |
| 1816 case NFA_NHEX: STRCPY(code, "NFA_NHEX"); break; | |
| 1817 case NFA_OCTAL: STRCPY(code, "NFA_OCTAL"); break; | |
| 1818 case NFA_NOCTAL:STRCPY(code, "NFA_NOCTAL"); break; | |
| 1819 case NFA_WORD: STRCPY(code, "NFA_WORD"); break; | |
| 1820 case NFA_NWORD: STRCPY(code, "NFA_NWORD"); break; | |
| 1821 case NFA_HEAD: STRCPY(code, "NFA_HEAD"); break; | |
| 1822 case NFA_NHEAD: STRCPY(code, "NFA_NHEAD"); break; | |
| 1823 case NFA_ALPHA: STRCPY(code, "NFA_ALPHA"); break; | |
| 1824 case NFA_NALPHA:STRCPY(code, "NFA_NALPHA"); break; | |
| 1825 case NFA_LOWER: STRCPY(code, "NFA_LOWER"); break; | |
| 1826 case NFA_NLOWER:STRCPY(code, "NFA_NLOWER"); break; | |
| 1827 case NFA_UPPER: STRCPY(code, "NFA_UPPER"); break; | |
| 1828 case NFA_NUPPER:STRCPY(code, "NFA_NUPPER"); break; | |
| 1829 | |
| 1830 default: | |
| 1831 STRCPY(code, "CHAR(x)"); | |
| 1832 code[5] = c; | |
| 1833 } | |
| 1834 | |
| 1835 if (addnl == TRUE) | |
| 1836 STRCAT(code, " + NEWLINE "); | |
| 1837 | |
| 1838 } | |
| 1839 | |
| 1840 #ifdef ENABLE_LOG | |
| 1841 static FILE *log_fd; | |
| 1842 | |
| 1843 /* | |
| 1844 * Print the postfix notation of the current regexp. | |
| 1845 */ | |
| 1846 static void | |
| 1847 nfa_postfix_dump(expr, retval) | |
| 1848 char_u *expr; | |
| 1849 int retval; | |
| 1850 { | |
| 1851 int *p; | |
| 1852 FILE *f; | |
| 1853 | |
|
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1854 f = fopen(NFA_REGEXP_DUMP_LOG, "a"); |
| 4444 | 1855 if (f != NULL) |
| 1856 { | |
| 1857 fprintf(f, "\n-------------------------\n"); | |
| 1858 if (retval == FAIL) | |
| 1859 fprintf(f, ">>> NFA engine failed ... \n"); | |
| 1860 else if (retval == OK) | |
| 1861 fprintf(f, ">>> NFA engine succeeded !\n"); | |
| 1862 fprintf(f, "Regexp: \"%s\"\nPostfix notation (char): \"", expr); | |
| 4464 | 1863 for (p = post_start; *p && p < post_end; p++) |
| 4444 | 1864 { |
| 1865 nfa_set_code(*p); | |
| 1866 fprintf(f, "%s, ", code); | |
| 1867 } | |
| 1868 fprintf(f, "\"\nPostfix notation (int): "); | |
| 4464 | 1869 for (p = post_start; *p && p < post_end; p++) |
| 4444 | 1870 fprintf(f, "%d ", *p); |
| 1871 fprintf(f, "\n\n"); | |
| 1872 fclose(f); | |
| 1873 } | |
| 1874 } | |
| 1875 | |
| 1876 /* | |
| 1877 * Print the NFA starting with a root node "state". | |
| 1878 */ | |
| 1879 static void | |
|
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1880 nfa_print_state(debugf, state) |
| 4444 | 1881 FILE *debugf; |
| 1882 nfa_state_T *state; | |
| 1883 { | |
|
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1884 garray_T indent; |
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1885 |
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1886 ga_init2(&indent, 1, 64); |
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1887 ga_append(&indent, '\0'); |
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1888 nfa_print_state2(debugf, state, &indent); |
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1889 ga_clear(&indent); |
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1890 } |
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1891 |
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1892 static void |
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1893 nfa_print_state2(debugf, state, indent) |
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1894 FILE *debugf; |
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1895 nfa_state_T *state; |
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1896 garray_T *indent; |
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1897 { |
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1898 char_u *p; |
| 4444 | 1899 |
| 1900 if (state == NULL) | |
| 1901 return; | |
| 1902 | |
| 1903 fprintf(debugf, "(%2d)", abs(state->id)); | |
|
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1904 |
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1905 /* Output indent */ |
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1906 p = (char_u *)indent->ga_data; |
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1907 if (indent->ga_len >= 3) |
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1908 { |
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1909 int last = indent->ga_len - 3; |
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1910 char_u save[2]; |
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1911 |
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1912 STRNCPY(save, &p[last], 2); |
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1913 STRNCPY(&p[last], "+-", 2); |
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1914 fprintf(debugf, " %s", p); |
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1915 STRNCPY(&p[last], save, 2); |
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1916 } |
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1917 else |
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1918 fprintf(debugf, " %s", p); |
| 4444 | 1919 |
| 1920 nfa_set_code(state->c); | |
|
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1921 fprintf(debugf, "%s%s (%d) (id=%d)\n", |
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1922 state->negated ? "NOT " : "", code, state->c, abs(state->id)); |
| 4444 | 1923 if (state->id < 0) |
| 1924 return; | |
| 1925 | |
| 1926 state->id = abs(state->id) * -1; | |
|
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1927 |
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1928 /* grow indent for state->out */ |
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1929 indent->ga_len -= 1; |
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1930 if (state->out1) |
|
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1931 ga_concat(indent, (char_u *)"| "); |
|
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1932 else |
|
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1933 ga_concat(indent, (char_u *)" "); |
|
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1934 ga_append(indent, '\0'); |
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1935 |
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1936 nfa_print_state2(debugf, state->out, indent); |
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1937 |
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1938 /* replace last part of indent for state->out1 */ |
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1939 indent->ga_len -= 3; |
|
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1940 ga_concat(indent, (char_u *)" "); |
|
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1941 ga_append(indent, '\0'); |
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1942 |
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1943 nfa_print_state2(debugf, state->out1, indent); |
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1944 |
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1945 /* shrink indent */ |
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1946 indent->ga_len -= 3; |
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1947 ga_append(indent, '\0'); |
| 4444 | 1948 } |
| 1949 | |
| 1950 /* | |
| 1951 * Print the NFA state machine. | |
| 1952 */ | |
| 1953 static void | |
| 1954 nfa_dump(prog) | |
| 1955 nfa_regprog_T *prog; | |
| 1956 { | |
|
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1957 FILE *debugf = fopen(NFA_REGEXP_DUMP_LOG, "a"); |
| 4444 | 1958 |
| 1959 if (debugf != NULL) | |
| 1960 { | |
|
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1961 nfa_print_state(debugf, prog->start); |
| 4444 | 1962 fclose(debugf); |
| 1963 } | |
| 1964 } | |
| 1965 #endif /* ENABLE_LOG */ | |
| 1966 #endif /* DEBUG */ | |
| 1967 | |
| 1968 /* | |
| 1969 * Parse r.e. @expr and convert it into postfix form. | |
| 1970 * Return the postfix string on success, NULL otherwise. | |
| 1971 */ | |
| 1972 static int * | |
| 1973 re2post() | |
| 1974 { | |
| 1975 if (nfa_reg(REG_NOPAREN) == FAIL) | |
| 1976 return NULL; | |
| 1977 EMIT(NFA_MOPEN); | |
| 1978 return post_start; | |
| 1979 } | |
| 1980 | |
| 1981 /* NB. Some of the code below is inspired by Russ's. */ | |
| 1982 | |
| 1983 /* | |
| 1984 * Represents an NFA state plus zero or one or two arrows exiting. | |
| 1985 * if c == MATCH, no arrows out; matching state. | |
| 1986 * If c == SPLIT, unlabeled arrows to out and out1 (if != NULL). | |
| 1987 * If c < 256, labeled arrow with character c to out. | |
| 1988 */ | |
| 1989 | |
| 1990 static nfa_state_T *state_ptr; /* points to nfa_prog->state */ | |
| 1991 | |
| 1992 /* | |
| 1993 * Allocate and initialize nfa_state_T. | |
| 1994 */ | |
| 1995 static nfa_state_T * | |
| 1996 new_state(c, out, out1) | |
| 1997 int c; | |
| 1998 nfa_state_T *out; | |
| 1999 nfa_state_T *out1; | |
| 2000 { | |
| 2001 nfa_state_T *s; | |
| 2002 | |
| 2003 if (istate >= nstate) | |
| 2004 return NULL; | |
| 2005 | |
| 2006 s = &state_ptr[istate++]; | |
| 2007 | |
| 2008 s->c = c; | |
| 2009 s->out = out; | |
| 2010 s->out1 = out1; | |
| 2011 | |
| 2012 s->id = istate; | |
| 2013 s->lastlist = 0; | |
| 2014 s->negated = FALSE; | |
| 2015 | |
| 2016 return s; | |
| 2017 } | |
| 2018 | |
| 2019 /* | |
| 2020 * A partially built NFA without the matching state filled in. | |
| 2021 * Frag_T.start points at the start state. | |
| 2022 * Frag_T.out is a list of places that need to be set to the | |
| 2023 * next state for this fragment. | |
| 2024 */ | |
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2025 |
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2026 /* Since the out pointers in the list are always |
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2027 * uninitialized, we use the pointers themselves |
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2028 * as storage for the Ptrlists. */ |
| 4444 | 2029 typedef union Ptrlist Ptrlist; |
|
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2030 union Ptrlist |
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2031 { |
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2032 Ptrlist *next; |
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2033 nfa_state_T *s; |
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2034 }; |
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2035 |
| 4444 | 2036 struct Frag |
| 2037 { | |
|
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2038 nfa_state_T *start; |
| 4444 | 2039 Ptrlist *out; |
| 2040 }; | |
| 2041 typedef struct Frag Frag_T; | |
| 2042 | |
| 2043 static Frag_T frag __ARGS((nfa_state_T *start, Ptrlist *out)); | |
| 2044 static Ptrlist *list1 __ARGS((nfa_state_T **outp)); | |
| 2045 static void patch __ARGS((Ptrlist *l, nfa_state_T *s)); | |
| 2046 static Ptrlist *append __ARGS((Ptrlist *l1, Ptrlist *l2)); | |
| 2047 static void st_push __ARGS((Frag_T s, Frag_T **p, Frag_T *stack_end)); | |
| 2048 static Frag_T st_pop __ARGS((Frag_T **p, Frag_T *stack)); | |
| 2049 | |
| 2050 /* | |
| 4456 | 2051 * Initialize a Frag_T struct and return it. |
| 4444 | 2052 */ |
| 2053 static Frag_T | |
| 2054 frag(start, out) | |
| 2055 nfa_state_T *start; | |
| 2056 Ptrlist *out; | |
| 2057 { | |
| 4456 | 2058 Frag_T n; |
| 2059 | |
| 2060 n.start = start; | |
| 2061 n.out = out; | |
| 4444 | 2062 return n; |
| 2063 } | |
| 2064 | |
| 2065 /* | |
| 2066 * Create singleton list containing just outp. | |
| 2067 */ | |
| 2068 static Ptrlist * | |
| 2069 list1(outp) | |
| 2070 nfa_state_T **outp; | |
| 2071 { | |
| 2072 Ptrlist *l; | |
| 2073 | |
| 2074 l = (Ptrlist *)outp; | |
| 2075 l->next = NULL; | |
| 2076 return l; | |
| 2077 } | |
| 2078 | |
| 2079 /* | |
| 2080 * Patch the list of states at out to point to start. | |
| 2081 */ | |
| 2082 static void | |
| 2083 patch(l, s) | |
| 2084 Ptrlist *l; | |
| 2085 nfa_state_T *s; | |
| 2086 { | |
| 2087 Ptrlist *next; | |
| 2088 | |
| 2089 for (; l; l = next) | |
| 2090 { | |
| 2091 next = l->next; | |
| 2092 l->s = s; | |
| 2093 } | |
| 2094 } | |
| 2095 | |
| 2096 | |
| 2097 /* | |
| 2098 * Join the two lists l1 and l2, returning the combination. | |
| 2099 */ | |
| 2100 static Ptrlist * | |
| 2101 append(l1, l2) | |
| 2102 Ptrlist *l1; | |
| 2103 Ptrlist *l2; | |
| 2104 { | |
| 2105 Ptrlist *oldl1; | |
| 2106 | |
| 2107 oldl1 = l1; | |
| 2108 while (l1->next) | |
| 2109 l1 = l1->next; | |
| 2110 l1->next = l2; | |
| 2111 return oldl1; | |
| 2112 } | |
| 2113 | |
| 2114 /* | |
| 2115 * Stack used for transforming postfix form into NFA. | |
| 2116 */ | |
| 2117 static Frag_T empty; | |
| 2118 | |
| 2119 static void | |
| 2120 st_error(postfix, end, p) | |
|
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2121 int *postfix UNUSED; |
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2122 int *end UNUSED; |
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2123 int *p UNUSED; |
| 4444 | 2124 { |
|
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2125 #ifdef NFA_REGEXP_ERROR_LOG |
| 4444 | 2126 FILE *df; |
| 2127 int *p2; | |
| 2128 | |
|
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2129 df = fopen(NFA_REGEXP_ERROR_LOG, "a"); |
| 4444 | 2130 if (df) |
| 2131 { | |
| 2132 fprintf(df, "Error popping the stack!\n"); | |
| 2133 #ifdef DEBUG | |
| 2134 fprintf(df, "Current regexp is \"%s\"\n", nfa_regengine.expr); | |
| 2135 #endif | |
| 2136 fprintf(df, "Postfix form is: "); | |
| 2137 #ifdef DEBUG | |
| 2138 for (p2 = postfix; p2 < end; p2++) | |
| 2139 { | |
| 2140 nfa_set_code(*p2); | |
| 2141 fprintf(df, "%s, ", code); | |
| 2142 } | |
| 2143 nfa_set_code(*p); | |
| 2144 fprintf(df, "\nCurrent position is: "); | |
| 2145 for (p2 = postfix; p2 <= p; p2 ++) | |
| 2146 { | |
| 2147 nfa_set_code(*p2); | |
| 2148 fprintf(df, "%s, ", code); | |
| 2149 } | |
| 2150 #else | |
| 2151 for (p2 = postfix; p2 < end; p2++) | |
| 2152 { | |
| 2153 fprintf(df, "%d, ", *p2); | |
| 2154 } | |
| 2155 fprintf(df, "\nCurrent position is: "); | |
| 2156 for (p2 = postfix; p2 <= p; p2 ++) | |
| 2157 { | |
| 2158 fprintf(df, "%d, ", *p2); | |
| 2159 } | |
| 2160 #endif | |
| 2161 fprintf(df, "\n--------------------------\n"); | |
| 2162 fclose(df); | |
| 2163 } | |
|
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2164 #endif |
| 4444 | 2165 EMSG(_("E874: (NFA) Could not pop the stack !")); |
| 2166 } | |
| 2167 | |
| 2168 /* | |
| 2169 * Push an item onto the stack. | |
| 2170 */ | |
| 2171 static void | |
| 2172 st_push(s, p, stack_end) | |
| 2173 Frag_T s; | |
| 2174 Frag_T **p; | |
| 2175 Frag_T *stack_end; | |
| 2176 { | |
| 2177 Frag_T *stackp = *p; | |
| 2178 | |
| 2179 if (stackp >= stack_end) | |
| 2180 return; | |
| 2181 *stackp = s; | |
| 2182 *p = *p + 1; | |
| 2183 } | |
| 2184 | |
| 2185 /* | |
| 2186 * Pop an item from the stack. | |
| 2187 */ | |
| 2188 static Frag_T | |
| 2189 st_pop(p, stack) | |
| 2190 Frag_T **p; | |
| 2191 Frag_T *stack; | |
| 2192 { | |
| 2193 Frag_T *stackp; | |
| 2194 | |
| 2195 *p = *p - 1; | |
| 2196 stackp = *p; | |
| 2197 if (stackp < stack) | |
| 2198 return empty; | |
| 2199 return **p; | |
| 2200 } | |
| 2201 | |
| 2202 /* | |
| 2203 * Convert a postfix form into its equivalent NFA. | |
| 2204 * Return the NFA start state on success, NULL otherwise. | |
| 2205 */ | |
| 2206 static nfa_state_T * | |
| 2207 post2nfa(postfix, end, nfa_calc_size) | |
| 2208 int *postfix; | |
| 2209 int *end; | |
| 2210 int nfa_calc_size; | |
| 2211 { | |
| 2212 int *p; | |
| 2213 int mopen; | |
| 2214 int mclose; | |
| 2215 Frag_T *stack = NULL; | |
| 2216 Frag_T *stackp = NULL; | |
| 2217 Frag_T *stack_end = NULL; | |
| 2218 Frag_T e1; | |
| 2219 Frag_T e2; | |
| 2220 Frag_T e; | |
| 2221 nfa_state_T *s; | |
| 2222 nfa_state_T *s1; | |
| 2223 nfa_state_T *matchstate; | |
| 4484 | 2224 nfa_state_T *ret = NULL; |
| 4444 | 2225 |
| 2226 if (postfix == NULL) | |
| 2227 return NULL; | |
| 2228 | |
| 4456 | 2229 #define PUSH(s) st_push((s), &stackp, stack_end) |
| 4444 | 2230 #define POP() st_pop(&stackp, stack); \ |
| 2231 if (stackp < stack) \ | |
| 2232 { \ | |
| 2233 st_error(postfix, end, p); \ | |
| 2234 return NULL; \ | |
| 2235 } | |
| 2236 | |
| 2237 if (nfa_calc_size == FALSE) | |
| 2238 { | |
| 2239 /* Allocate space for the stack. Max states on the stack : nstate */ | |
| 4462 | 2240 stack = (Frag_T *) lalloc((nstate + 1) * sizeof(Frag_T), TRUE); |
| 4444 | 2241 stackp = stack; |
| 4462 | 2242 stack_end = stack + (nstate + 1); |
| 4444 | 2243 } |
| 2244 | |
| 2245 for (p = postfix; p < end; ++p) | |
| 2246 { | |
| 2247 switch (*p) | |
| 2248 { | |
| 2249 case NFA_CONCAT: | |
| 2250 /* Catenation. | |
| 2251 * Pay attention: this operator does not exist | |
| 2252 * in the r.e. itself (it is implicit, really). | |
| 2253 * It is added when r.e. is translated to postfix | |
| 2254 * form in re2post(). | |
| 2255 * | |
| 2256 * No new state added here. */ | |
| 2257 if (nfa_calc_size == TRUE) | |
| 2258 { | |
| 4458 | 2259 /* nstate += 0; */ |
| 4444 | 2260 break; |
| 2261 } | |
| 2262 e2 = POP(); | |
| 2263 e1 = POP(); | |
| 2264 patch(e1.out, e2.start); | |
| 2265 PUSH(frag(e1.start, e2.out)); | |
| 2266 break; | |
| 2267 | |
| 2268 case NFA_NOT: | |
| 2269 /* Negation of a character */ | |
| 2270 if (nfa_calc_size == TRUE) | |
| 2271 { | |
| 4458 | 2272 /* nstate += 0; */ |
| 4444 | 2273 break; |
| 2274 } | |
| 2275 e1 = POP(); | |
| 2276 e1.start->negated = TRUE; | |
|
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2277 #ifdef FEAT_MBYTE |
|
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2278 if (e1.start->c == NFA_COMPOSING) |
| 4444 | 2279 e1.start->out1->negated = TRUE; |
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2280 #endif |
| 4444 | 2281 PUSH(e1); |
| 2282 break; | |
| 2283 | |
| 2284 case NFA_OR: | |
| 2285 /* Alternation */ | |
| 2286 if (nfa_calc_size == TRUE) | |
| 2287 { | |
| 4458 | 2288 nstate++; |
| 4444 | 2289 break; |
| 2290 } | |
| 2291 e2 = POP(); | |
| 2292 e1 = POP(); | |
| 2293 s = new_state(NFA_SPLIT, e1.start, e2.start); | |
| 2294 if (s == NULL) | |
| 4484 | 2295 goto theend; |
| 4444 | 2296 PUSH(frag(s, append(e1.out, e2.out))); |
| 2297 break; | |
| 2298 | |
| 2299 case NFA_STAR: | |
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2300 /* Zero or more, prefer more */ |
| 4444 | 2301 if (nfa_calc_size == TRUE) |
| 2302 { | |
| 4458 | 2303 nstate++; |
| 4444 | 2304 break; |
| 2305 } | |
| 2306 e = POP(); | |
| 2307 s = new_state(NFA_SPLIT, e.start, NULL); | |
| 2308 if (s == NULL) | |
| 4484 | 2309 goto theend; |
| 4444 | 2310 patch(e.out, s); |
| 2311 PUSH(frag(s, list1(&s->out1))); | |
| 2312 break; | |
| 2313 | |
|
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2314 case NFA_STAR_NONGREEDY: |
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2315 /* Zero or more, prefer zero */ |
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2316 if (nfa_calc_size == TRUE) |
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2317 { |
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2318 nstate++; |
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2319 break; |
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2320 } |
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2321 e = POP(); |
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2322 s = new_state(NFA_SPLIT, NULL, e.start); |
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2323 if (s == NULL) |
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2324 goto theend; |
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2325 patch(e.out, s); |
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2326 PUSH(frag(s, list1(&s->out))); |
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2327 break; |
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2328 |
| 4444 | 2329 case NFA_QUEST: |
| 2330 /* one or zero atoms=> greedy match */ | |
| 2331 if (nfa_calc_size == TRUE) | |
| 2332 { | |
| 4458 | 2333 nstate++; |
| 4444 | 2334 break; |
| 2335 } | |
| 2336 e = POP(); | |
| 2337 s = new_state(NFA_SPLIT, e.start, NULL); | |
| 2338 if (s == NULL) | |
| 4484 | 2339 goto theend; |
| 4444 | 2340 PUSH(frag(s, append(e.out, list1(&s->out1)))); |
| 2341 break; | |
| 2342 | |
| 2343 case NFA_QUEST_NONGREEDY: | |
| 2344 /* zero or one atoms => non-greedy match */ | |
| 2345 if (nfa_calc_size == TRUE) | |
| 2346 { | |
| 4458 | 2347 nstate++; |
| 4444 | 2348 break; |
| 2349 } | |
| 2350 e = POP(); | |
| 2351 s = new_state(NFA_SPLIT, NULL, e.start); | |
| 2352 if (s == NULL) | |
| 4484 | 2353 goto theend; |
| 4444 | 2354 PUSH(frag(s, append(e.out, list1(&s->out)))); |
| 2355 break; | |
| 2356 | |
| 2357 case NFA_SKIP_CHAR: | |
| 2358 /* Symbol of 0-length, Used in a repetition | |
| 2359 * with max/min count of 0 */ | |
| 2360 if (nfa_calc_size == TRUE) | |
| 2361 { | |
| 4458 | 2362 nstate++; |
| 4444 | 2363 break; |
| 2364 } | |
| 2365 s = new_state(NFA_SKIP_CHAR, NULL, NULL); | |
| 2366 if (s == NULL) | |
| 4484 | 2367 goto theend; |
| 4444 | 2368 PUSH(frag(s, list1(&s->out))); |
| 2369 break; | |
| 2370 | |
| 2371 case NFA_PREV_ATOM_NO_WIDTH: | |
|
4661
0dce3d812e7a
updated for version 7.3.1078
Bram Moolenaar <bram@vim.org>
parents:
4657
diff
changeset
|
2372 case NFA_PREV_ATOM_NO_WIDTH_NEG: |
|
4657
93b7ed814bec
updated for version 7.3.1076
Bram Moolenaar <bram@vim.org>
parents:
4655
diff
changeset
|
2373 /* The \@= operator: match the preceding atom with zero width. |
|
4661
0dce3d812e7a
updated for version 7.3.1078
Bram Moolenaar <bram@vim.org>
parents:
4657
diff
changeset
|
2374 * The \@! operator: no match for the preceding atom. |
| 4444 | 2375 * Surrounds the preceding atom with START_INVISIBLE and |
|
4657
93b7ed814bec
updated for version 7.3.1076
Bram Moolenaar <bram@vim.org>
parents:
4655
diff
changeset
|
2376 * END_INVISIBLE, similarly to MOPEN. */ |
| 4444 | 2377 |
| 2378 if (nfa_calc_size == TRUE) | |
| 2379 { | |
| 2380 nstate += 2; | |
| 2381 break; | |
| 2382 } | |
| 2383 e = POP(); | |
| 2384 s1 = new_state(NFA_END_INVISIBLE, NULL, NULL); | |
| 2385 if (s1 == NULL) | |
| 4484 | 2386 goto theend; |
| 4444 | 2387 patch(e.out, s1); |
| 2388 | |
| 2389 s = new_state(NFA_START_INVISIBLE, e.start, s1); | |
| 2390 if (s == NULL) | |
| 4484 | 2391 goto theend; |
|
4661
0dce3d812e7a
updated for version 7.3.1078
Bram Moolenaar <bram@vim.org>
parents:
4657
diff
changeset
|
2392 if (*p == NFA_PREV_ATOM_NO_WIDTH_NEG) |
|
0dce3d812e7a
updated for version 7.3.1078
Bram Moolenaar <bram@vim.org>
parents:
4657
diff
changeset
|
2393 { |
|
0dce3d812e7a
updated for version 7.3.1078
Bram Moolenaar <bram@vim.org>
parents:
4657
diff
changeset
|
2394 s->negated = TRUE; |
|
0dce3d812e7a
updated for version 7.3.1078
Bram Moolenaar <bram@vim.org>
parents:
4657
diff
changeset
|
2395 s1->negated = TRUE; |
|
0dce3d812e7a
updated for version 7.3.1078
Bram Moolenaar <bram@vim.org>
parents:
4657
diff
changeset
|
2396 } |
|
0dce3d812e7a
updated for version 7.3.1078
Bram Moolenaar <bram@vim.org>
parents:
4657
diff
changeset
|
2397 |
| 4444 | 2398 PUSH(frag(s, list1(&s1->out))); |
| 2399 break; | |
| 2400 | |
|
4531
1be43c095aff
updated for version 7.3.1013
Bram Moolenaar <bram@vim.org>
parents:
4529
diff
changeset
|
2401 #ifdef FEAT_MBYTE |
|
4527
55bcaa1d2749
updated for version 7.3.1011
Bram Moolenaar <bram@vim.org>
parents:
4525
diff
changeset
|
2402 case NFA_COMPOSING: /* char with composing char */ |
|
55bcaa1d2749
updated for version 7.3.1011
Bram Moolenaar <bram@vim.org>
parents:
4525
diff
changeset
|
2403 #if 0 |
|
55bcaa1d2749
updated for version 7.3.1011
Bram Moolenaar <bram@vim.org>
parents:
4525
diff
changeset
|
2404 /* TODO */ |
|
55bcaa1d2749
updated for version 7.3.1011
Bram Moolenaar <bram@vim.org>
parents:
4525
diff
changeset
|
2405 if (regflags & RF_ICOMBINE) |
|
55bcaa1d2749
updated for version 7.3.1011
Bram Moolenaar <bram@vim.org>
parents:
4525
diff
changeset
|
2406 { |
|
4529
432a6b8c7d93
updated for version 7.3.1012
Bram Moolenaar <bram@vim.org>
parents:
4527
diff
changeset
|
2407 /* use the base character only */ |
|
4527
55bcaa1d2749
updated for version 7.3.1011
Bram Moolenaar <bram@vim.org>
parents:
4525
diff
changeset
|
2408 } |
|
55bcaa1d2749
updated for version 7.3.1011
Bram Moolenaar <bram@vim.org>
parents:
4525
diff
changeset
|
2409 #endif |
|
55bcaa1d2749
updated for version 7.3.1011
Bram Moolenaar <bram@vim.org>
parents:
4525
diff
changeset
|
2410 /* FALLTHROUGH */ |
|
4531
1be43c095aff
updated for version 7.3.1013
Bram Moolenaar <bram@vim.org>
parents:
4529
diff
changeset
|
2411 #endif |
|
4527
55bcaa1d2749
updated for version 7.3.1011
Bram Moolenaar <bram@vim.org>
parents:
4525
diff
changeset
|
2412 |
| 4444 | 2413 case NFA_MOPEN + 0: /* Submatch */ |
| 2414 case NFA_MOPEN + 1: | |
| 2415 case NFA_MOPEN + 2: | |
| 2416 case NFA_MOPEN + 3: | |
| 2417 case NFA_MOPEN + 4: | |
| 2418 case NFA_MOPEN + 5: | |
| 2419 case NFA_MOPEN + 6: | |
| 2420 case NFA_MOPEN + 7: | |
| 2421 case NFA_MOPEN + 8: | |
| 2422 case NFA_MOPEN + 9: | |
| 2423 case NFA_NOPEN: /* \%( "Invisible Submatch" */ | |
| 2424 if (nfa_calc_size == TRUE) | |
| 2425 { | |
| 2426 nstate += 2; | |
| 2427 break; | |
| 2428 } | |
| 2429 | |
| 2430 mopen = *p; | |
| 2431 switch (*p) | |
| 2432 { | |
| 2433 case NFA_NOPEN: | |
| 2434 mclose = NFA_NCLOSE; | |
| 2435 break; | |
|
4531
1be43c095aff
updated for version 7.3.1013
Bram Moolenaar <bram@vim.org>
parents:
4529
diff
changeset
|
2436 #ifdef FEAT_MBYTE |
| 4444 | 2437 case NFA_COMPOSING: |
| 2438 mclose = NFA_END_COMPOSING; | |
| 2439 break; | |
|
4531
1be43c095aff
updated for version 7.3.1013
Bram Moolenaar <bram@vim.org>
parents:
4529
diff
changeset
|
2440 #endif |
| 4444 | 2441 default: |
| 2442 /* NFA_MOPEN(0) ... NFA_MOPEN(9) */ | |
| 2443 mclose = *p + NSUBEXP; | |
| 2444 break; | |
| 2445 } | |
| 2446 | |
| 2447 /* Allow "NFA_MOPEN" as a valid postfix representation for | |
| 2448 * the empty regexp "". In this case, the NFA will be | |
| 2449 * NFA_MOPEN -> NFA_MCLOSE. Note that this also allows | |
| 2450 * empty groups of parenthesis, and empty mbyte chars */ | |
| 2451 if (stackp == stack) | |
| 2452 { | |
| 2453 s = new_state(mopen, NULL, NULL); | |
| 2454 if (s == NULL) | |
| 4484 | 2455 goto theend; |
| 4444 | 2456 s1 = new_state(mclose, NULL, NULL); |
| 2457 if (s1 == NULL) | |
| 4484 | 2458 goto theend; |
| 4444 | 2459 patch(list1(&s->out), s1); |
| 2460 PUSH(frag(s, list1(&s1->out))); | |
| 2461 break; | |
| 2462 } | |
| 2463 | |
| 2464 /* At least one node was emitted before NFA_MOPEN, so | |
| 2465 * at least one node will be between NFA_MOPEN and NFA_MCLOSE */ | |
| 2466 e = POP(); | |
| 2467 s = new_state(mopen, e.start, NULL); /* `(' */ | |
| 2468 if (s == NULL) | |
| 4484 | 2469 goto theend; |
| 4444 | 2470 |
| 2471 s1 = new_state(mclose, NULL, NULL); /* `)' */ | |
| 2472 if (s1 == NULL) | |
| 4484 | 2473 goto theend; |
| 4444 | 2474 patch(e.out, s1); |
| 2475 | |
|
4531
1be43c095aff
updated for version 7.3.1013
Bram Moolenaar <bram@vim.org>
parents:
4529
diff
changeset
|
2476 #ifdef FEAT_MBYTE |
|
4527
55bcaa1d2749
updated for version 7.3.1011
Bram Moolenaar <bram@vim.org>
parents:
4525
diff
changeset
|
2477 if (mopen == NFA_COMPOSING) |
|
55bcaa1d2749
updated for version 7.3.1011
Bram Moolenaar <bram@vim.org>
parents:
4525
diff
changeset
|
2478 /* COMPOSING->out1 = END_COMPOSING */ |
| 4444 | 2479 patch(list1(&s->out1), s1); |
|
4531
1be43c095aff
updated for version 7.3.1013
Bram Moolenaar <bram@vim.org>
parents:
4529
diff
changeset
|
2480 #endif |
| 4444 | 2481 |
| 2482 PUSH(frag(s, list1(&s1->out))); | |
| 2483 break; | |
| 2484 | |
|
4571
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2485 case NFA_BACKREF1: |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2486 case NFA_BACKREF2: |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2487 case NFA_BACKREF3: |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2488 case NFA_BACKREF4: |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2489 case NFA_BACKREF5: |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2490 case NFA_BACKREF6: |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2491 case NFA_BACKREF7: |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2492 case NFA_BACKREF8: |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2493 case NFA_BACKREF9: |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2494 if (nfa_calc_size == TRUE) |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2495 { |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2496 nstate += 2; |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2497 break; |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2498 } |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2499 s = new_state(*p, NULL, NULL); |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2500 if (s == NULL) |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2501 goto theend; |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2502 s1 = new_state(NFA_SKIP, NULL, NULL); |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2503 if (s1 == NULL) |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2504 goto theend; |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2505 patch(list1(&s->out), s1); |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2506 PUSH(frag(s, list1(&s1->out))); |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2507 break; |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2508 |
|
4583
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
2509 case NFA_LNUM: |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
2510 case NFA_LNUM_GT: |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
2511 case NFA_LNUM_LT: |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
2512 case NFA_VCOL: |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
2513 case NFA_VCOL_GT: |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
2514 case NFA_VCOL_LT: |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
2515 case NFA_COL: |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
2516 case NFA_COL_GT: |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
2517 case NFA_COL_LT: |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
2518 if (nfa_calc_size == TRUE) |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
2519 { |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
2520 nstate += 1; |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
2521 break; |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
2522 } |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
2523 e1 = POP(); |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
2524 s = new_state(*p, NULL, NULL); |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
2525 if (s == NULL) |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
2526 goto theend; |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
2527 s->val = e1.start->c; |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
2528 PUSH(frag(s, list1(&s->out))); |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
2529 break; |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
2530 |
| 4444 | 2531 case NFA_ZSTART: |
| 2532 case NFA_ZEND: | |
| 2533 default: | |
| 2534 /* Operands */ | |
| 2535 if (nfa_calc_size == TRUE) | |
| 2536 { | |
| 4458 | 2537 nstate++; |
| 4444 | 2538 break; |
| 2539 } | |
| 2540 s = new_state(*p, NULL, NULL); | |
| 2541 if (s == NULL) | |
| 4484 | 2542 goto theend; |
| 4444 | 2543 PUSH(frag(s, list1(&s->out))); |
| 2544 break; | |
| 2545 | |
| 2546 } /* switch(*p) */ | |
| 2547 | |
| 2548 } /* for(p = postfix; *p; ++p) */ | |
| 2549 | |
| 2550 if (nfa_calc_size == TRUE) | |
| 2551 { | |
| 4458 | 2552 nstate++; |
| 4484 | 2553 goto theend; /* Return value when counting size is ignored anyway */ |
| 4444 | 2554 } |
| 2555 | |
| 2556 e = POP(); | |
| 2557 if (stackp != stack) | |
| 2558 EMSG_RET_NULL(_("E875: (NFA regexp) (While converting from postfix to NFA), too many states left on stack")); | |
| 2559 | |
| 2560 if (istate >= nstate) | |
| 2561 EMSG_RET_NULL(_("E876: (NFA regexp) Not enough space to store the whole NFA ")); | |
| 2562 | |
| 2563 matchstate = &state_ptr[istate++]; /* the match state */ | |
| 2564 matchstate->c = NFA_MATCH; | |
| 2565 matchstate->out = matchstate->out1 = NULL; | |
| 2566 | |
| 2567 patch(e.out, matchstate); | |
| 4484 | 2568 ret = e.start; |
| 2569 | |
| 2570 theend: | |
| 2571 vim_free(stack); | |
| 2572 return ret; | |
| 4444 | 2573 |
| 2574 #undef POP1 | |
| 2575 #undef PUSH1 | |
| 2576 #undef POP2 | |
| 2577 #undef PUSH2 | |
| 2578 #undef POP | |
| 2579 #undef PUSH | |
| 2580 } | |
| 2581 | |
| 2582 /**************************************************************** | |
| 2583 * NFA execution code. | |
| 2584 ****************************************************************/ | |
| 2585 | |
|
4563
e7016af0cbf9
updated for version 7.3.1029
Bram Moolenaar <bram@vim.org>
parents:
4561
diff
changeset
|
2586 typedef struct |
|
e7016af0cbf9
updated for version 7.3.1029
Bram Moolenaar <bram@vim.org>
parents:
4561
diff
changeset
|
2587 { |
|
e7016af0cbf9
updated for version 7.3.1029
Bram Moolenaar <bram@vim.org>
parents:
4561
diff
changeset
|
2588 int in_use; /* number of subexpr with useful info */ |
|
e7016af0cbf9
updated for version 7.3.1029
Bram Moolenaar <bram@vim.org>
parents:
4561
diff
changeset
|
2589 |
|
4577
b22bff1a6af8
updated for version 7.3.1036
Bram Moolenaar <bram@vim.org>
parents:
4573
diff
changeset
|
2590 /* When REG_MULTI is TRUE list.multi is used, otherwise list.line. */ |
|
4563
e7016af0cbf9
updated for version 7.3.1029
Bram Moolenaar <bram@vim.org>
parents:
4561
diff
changeset
|
2591 union |
|
e7016af0cbf9
updated for version 7.3.1029
Bram Moolenaar <bram@vim.org>
parents:
4561
diff
changeset
|
2592 { |
|
e7016af0cbf9
updated for version 7.3.1029
Bram Moolenaar <bram@vim.org>
parents:
4561
diff
changeset
|
2593 struct multipos |
|
e7016af0cbf9
updated for version 7.3.1029
Bram Moolenaar <bram@vim.org>
parents:
4561
diff
changeset
|
2594 { |
|
e7016af0cbf9
updated for version 7.3.1029
Bram Moolenaar <bram@vim.org>
parents:
4561
diff
changeset
|
2595 lpos_T start; |
|
e7016af0cbf9
updated for version 7.3.1029
Bram Moolenaar <bram@vim.org>
parents:
4561
diff
changeset
|
2596 lpos_T end; |
|
4577
b22bff1a6af8
updated for version 7.3.1036
Bram Moolenaar <bram@vim.org>
parents:
4573
diff
changeset
|
2597 } multi[NSUBEXP]; |
|
4563
e7016af0cbf9
updated for version 7.3.1029
Bram Moolenaar <bram@vim.org>
parents:
4561
diff
changeset
|
2598 struct linepos |
|
e7016af0cbf9
updated for version 7.3.1029
Bram Moolenaar <bram@vim.org>
parents:
4561
diff
changeset
|
2599 { |
|
e7016af0cbf9
updated for version 7.3.1029
Bram Moolenaar <bram@vim.org>
parents:
4561
diff
changeset
|
2600 char_u *start; |
|
e7016af0cbf9
updated for version 7.3.1029
Bram Moolenaar <bram@vim.org>
parents:
4561
diff
changeset
|
2601 char_u *end; |
|
4577
b22bff1a6af8
updated for version 7.3.1036
Bram Moolenaar <bram@vim.org>
parents:
4573
diff
changeset
|
2602 } line[NSUBEXP]; |
|
b22bff1a6af8
updated for version 7.3.1036
Bram Moolenaar <bram@vim.org>
parents:
4573
diff
changeset
|
2603 } list; |
|
4563
e7016af0cbf9
updated for version 7.3.1029
Bram Moolenaar <bram@vim.org>
parents:
4561
diff
changeset
|
2604 } regsub_T; |
|
e7016af0cbf9
updated for version 7.3.1029
Bram Moolenaar <bram@vim.org>
parents:
4561
diff
changeset
|
2605 |
|
4561
4d81fdda8f35
updated for version 7.3.1028
Bram Moolenaar <bram@vim.org>
parents:
4559
diff
changeset
|
2606 /* nfa_thread_T contains execution information of a NFA state */ |
|
4539
532c2e850256
updated for version 7.3.1017
Bram Moolenaar <bram@vim.org>
parents:
4537
diff
changeset
|
2607 typedef struct |
| 4444 | 2608 { |
| 2609 nfa_state_T *state; | |
|
4571
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2610 int count; |
|
4561
4d81fdda8f35
updated for version 7.3.1028
Bram Moolenaar <bram@vim.org>
parents:
4559
diff
changeset
|
2611 regsub_T sub; /* submatch info, only party used */ |
|
4539
532c2e850256
updated for version 7.3.1017
Bram Moolenaar <bram@vim.org>
parents:
4537
diff
changeset
|
2612 } nfa_thread_T; |
|
532c2e850256
updated for version 7.3.1017
Bram Moolenaar <bram@vim.org>
parents:
4537
diff
changeset
|
2613 |
|
4561
4d81fdda8f35
updated for version 7.3.1028
Bram Moolenaar <bram@vim.org>
parents:
4559
diff
changeset
|
2614 /* nfa_list_T contains the alternative NFA execution states. */ |
| 4444 | 2615 typedef struct |
| 2616 { | |
|
4571
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2617 nfa_thread_T *t; /* allocated array of states */ |
|
4647
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2618 int n; /* nr of states currently in "t" */ |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2619 int len; /* max nr of states in "t" */ |
|
4571
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2620 int id; /* ID of the list */ |
|
4539
532c2e850256
updated for version 7.3.1017
Bram Moolenaar <bram@vim.org>
parents:
4537
diff
changeset
|
2621 } nfa_list_T; |
|
532c2e850256
updated for version 7.3.1017
Bram Moolenaar <bram@vim.org>
parents:
4537
diff
changeset
|
2622 |
|
4571
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2623 #ifdef ENABLE_LOG |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2624 static void |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2625 log_subexpr(sub) |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2626 regsub_T *sub; |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2627 { |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2628 int j; |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2629 |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2630 for (j = 0; j < sub->in_use; j++) |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2631 if (REG_MULTI) |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2632 fprintf(log_fd, "\n *** group %d, start: c=%d, l=%d, end: c=%d, l=%d", |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2633 j, |
|
4577
b22bff1a6af8
updated for version 7.3.1036
Bram Moolenaar <bram@vim.org>
parents:
4573
diff
changeset
|
2634 sub->list.multi[j].start.col, |
|
b22bff1a6af8
updated for version 7.3.1036
Bram Moolenaar <bram@vim.org>
parents:
4573
diff
changeset
|
2635 (int)sub->list.multi[j].start.lnum, |
|
b22bff1a6af8
updated for version 7.3.1036
Bram Moolenaar <bram@vim.org>
parents:
4573
diff
changeset
|
2636 sub->list.multi[j].end.col, |
|
b22bff1a6af8
updated for version 7.3.1036
Bram Moolenaar <bram@vim.org>
parents:
4573
diff
changeset
|
2637 (int)sub->list.multi[j].end.lnum); |
|
4571
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2638 else |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2639 fprintf(log_fd, "\n *** group %d, start: \"%s\", end: \"%s\"", |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2640 j, |
|
4577
b22bff1a6af8
updated for version 7.3.1036
Bram Moolenaar <bram@vim.org>
parents:
4573
diff
changeset
|
2641 (char *)sub->list.line[j].start, |
|
b22bff1a6af8
updated for version 7.3.1036
Bram Moolenaar <bram@vim.org>
parents:
4573
diff
changeset
|
2642 (char *)sub->list.line[j].end); |
|
4571
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2643 fprintf(log_fd, "\n"); |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2644 } |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2645 #endif |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2646 |
|
4561
4d81fdda8f35
updated for version 7.3.1028
Bram Moolenaar <bram@vim.org>
parents:
4559
diff
changeset
|
2647 /* Used during execution: whether a match has been found. */ |
|
4d81fdda8f35
updated for version 7.3.1028
Bram Moolenaar <bram@vim.org>
parents:
4559
diff
changeset
|
2648 static int nfa_match; |
|
4d81fdda8f35
updated for version 7.3.1028
Bram Moolenaar <bram@vim.org>
parents:
4559
diff
changeset
|
2649 |
|
4647
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2650 static int sub_equal __ARGS((regsub_T *sub1, regsub_T *sub2)); |
|
4571
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2651 static void addstate __ARGS((nfa_list_T *l, nfa_state_T *state, regsub_T *sub, int off)); |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2652 static void addstate_here __ARGS((nfa_list_T *l, nfa_state_T *state, regsub_T *sub, int *ip)); |
| 4444 | 2653 |
|
4647
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2654 /* |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2655 * Return TRUE if "sub1" and "sub2" have the same positions. |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2656 */ |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2657 static int |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2658 sub_equal(sub1, sub2) |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2659 regsub_T *sub1; |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2660 regsub_T *sub2; |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2661 { |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2662 int i; |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2663 int todo; |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2664 linenr_T s1, e1; |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2665 linenr_T s2, e2; |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2666 char_u *sp1, *ep1; |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2667 char_u *sp2, *ep2; |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2668 |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2669 todo = sub1->in_use > sub2->in_use ? sub1->in_use : sub2->in_use; |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2670 if (REG_MULTI) |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2671 { |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2672 for (i = 0; i < todo; ++i) |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2673 { |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2674 if (i < sub1->in_use) |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2675 { |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2676 s1 = sub1->list.multi[i].start.lnum; |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2677 e1 = sub1->list.multi[i].end.lnum; |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2678 } |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2679 else |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2680 { |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2681 s1 = 0; |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2682 e1 = 0; |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2683 } |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2684 if (i < sub2->in_use) |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2685 { |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2686 s2 = sub2->list.multi[i].start.lnum; |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2687 e2 = sub2->list.multi[i].end.lnum; |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2688 } |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2689 else |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2690 { |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2691 s2 = 0; |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2692 e2 = 0; |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2693 } |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2694 if (s1 != s2 || e1 != e2) |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2695 return FALSE; |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2696 if (s1 != 0 && sub1->list.multi[i].start.col |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2697 != sub2->list.multi[i].start.col) |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2698 return FALSE; |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2699 if (e1 != 0 && sub1->list.multi[i].end.col |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2700 != sub2->list.multi[i].end.col) |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2701 return FALSE; |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2702 } |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2703 } |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2704 else |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2705 { |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2706 for (i = 0; i < todo; ++i) |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2707 { |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2708 if (i < sub1->in_use) |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2709 { |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2710 sp1 = sub1->list.line[i].start; |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2711 ep1 = sub1->list.line[i].end; |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2712 } |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2713 else |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2714 { |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2715 sp1 = NULL; |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2716 ep1 = NULL; |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2717 } |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2718 if (i < sub2->in_use) |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2719 { |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2720 sp2 = sub2->list.line[i].start; |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2721 ep2 = sub2->list.line[i].end; |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2722 } |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2723 else |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2724 { |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2725 sp2 = NULL; |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2726 ep2 = NULL; |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2727 } |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2728 if (sp1 != sp2 || ep1 != ep2) |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2729 return FALSE; |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2730 } |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2731 } |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2732 |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2733 return TRUE; |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2734 } |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2735 |
| 4444 | 2736 static void |
|
4571
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2737 addstate(l, state, sub, off) |
|
4539
532c2e850256
updated for version 7.3.1017
Bram Moolenaar <bram@vim.org>
parents:
4537
diff
changeset
|
2738 nfa_list_T *l; /* runtime state list */ |
| 4444 | 2739 nfa_state_T *state; /* state to update */ |
|
4571
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2740 regsub_T *sub; /* pointers to subexpressions */ |
|
4515
90e9917d4114
updated for version 7.3.1005
Bram Moolenaar <bram@vim.org>
parents:
4507
diff
changeset
|
2741 int off; /* byte offset, when -1 go to next line */ |
| 4444 | 2742 { |
|
4561
4d81fdda8f35
updated for version 7.3.1028
Bram Moolenaar <bram@vim.org>
parents:
4559
diff
changeset
|
2743 int subidx; |
|
4647
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2744 nfa_thread_T *thread; |
|
4561
4d81fdda8f35
updated for version 7.3.1028
Bram Moolenaar <bram@vim.org>
parents:
4559
diff
changeset
|
2745 lpos_T save_lpos; |
|
4563
e7016af0cbf9
updated for version 7.3.1029
Bram Moolenaar <bram@vim.org>
parents:
4561
diff
changeset
|
2746 int save_in_use; |
|
4561
4d81fdda8f35
updated for version 7.3.1028
Bram Moolenaar <bram@vim.org>
parents:
4559
diff
changeset
|
2747 char_u *save_ptr; |
|
4563
e7016af0cbf9
updated for version 7.3.1029
Bram Moolenaar <bram@vim.org>
parents:
4561
diff
changeset
|
2748 int i; |
|
4657
93b7ed814bec
updated for version 7.3.1076
Bram Moolenaar <bram@vim.org>
parents:
4655
diff
changeset
|
2749 #ifdef ENABLE_LOG |
|
93b7ed814bec
updated for version 7.3.1076
Bram Moolenaar <bram@vim.org>
parents:
4655
diff
changeset
|
2750 int did_print = FALSE; |
|
93b7ed814bec
updated for version 7.3.1076
Bram Moolenaar <bram@vim.org>
parents:
4655
diff
changeset
|
2751 #endif |
| 4444 | 2752 |
| 2753 if (l == NULL || state == NULL) | |
| 2754 return; | |
| 2755 | |
| 2756 switch (state->c) | |
| 2757 { | |
| 2758 case NFA_SPLIT: | |
| 2759 case NFA_NOT: | |
| 2760 case NFA_NOPEN: | |
| 2761 case NFA_NCLOSE: | |
| 2762 case NFA_MCLOSE: | |
| 2763 case NFA_MCLOSE + 1: | |
| 2764 case NFA_MCLOSE + 2: | |
| 2765 case NFA_MCLOSE + 3: | |
| 2766 case NFA_MCLOSE + 4: | |
| 2767 case NFA_MCLOSE + 5: | |
| 2768 case NFA_MCLOSE + 6: | |
| 2769 case NFA_MCLOSE + 7: | |
| 2770 case NFA_MCLOSE + 8: | |
| 2771 case NFA_MCLOSE + 9: | |
|
4571
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2772 /* These nodes are not added themselves but their "out" and/or |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2773 * "out1" may be added below. */ |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2774 break; |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2775 |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2776 case NFA_MOPEN: |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2777 case NFA_MOPEN + 1: |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2778 case NFA_MOPEN + 2: |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2779 case NFA_MOPEN + 3: |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2780 case NFA_MOPEN + 4: |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2781 case NFA_MOPEN + 5: |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2782 case NFA_MOPEN + 6: |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2783 case NFA_MOPEN + 7: |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2784 case NFA_MOPEN + 8: |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2785 case NFA_MOPEN + 9: |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2786 /* These nodes do not need to be added, but we need to bail out |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2787 * when it was tried to be added to this list before. */ |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2788 if (state->lastlist == l->id) |
|
4657
93b7ed814bec
updated for version 7.3.1076
Bram Moolenaar <bram@vim.org>
parents:
4655
diff
changeset
|
2789 goto skip_add; |
|
4571
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2790 state->lastlist = l->id; |
| 4444 | 2791 break; |
| 2792 | |
| 2793 default: | |
|
4571
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2794 if (state->lastlist == l->id) |
| 4444 | 2795 { |
|
4571
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2796 /* This state is already in the list, don't add it again, |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2797 * unless it is an MOPEN that is used for a backreference. */ |
|
4647
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2798 if (!nfa_has_backref) |
|
4657
93b7ed814bec
updated for version 7.3.1076
Bram Moolenaar <bram@vim.org>
parents:
4655
diff
changeset
|
2799 { |
|
93b7ed814bec
updated for version 7.3.1076
Bram Moolenaar <bram@vim.org>
parents:
4655
diff
changeset
|
2800 skip_add: |
|
93b7ed814bec
updated for version 7.3.1076
Bram Moolenaar <bram@vim.org>
parents:
4655
diff
changeset
|
2801 #ifdef ENABLE_LOG |
|
93b7ed814bec
updated for version 7.3.1076
Bram Moolenaar <bram@vim.org>
parents:
4655
diff
changeset
|
2802 nfa_set_code(state->c); |
|
93b7ed814bec
updated for version 7.3.1076
Bram Moolenaar <bram@vim.org>
parents:
4655
diff
changeset
|
2803 fprintf(log_fd, "> Not adding state %d to list %d. char %d: %s\n", |
|
93b7ed814bec
updated for version 7.3.1076
Bram Moolenaar <bram@vim.org>
parents:
4655
diff
changeset
|
2804 abs(state->id), l->id, state->c, code); |
|
93b7ed814bec
updated for version 7.3.1076
Bram Moolenaar <bram@vim.org>
parents:
4655
diff
changeset
|
2805 #endif |
|
4647
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2806 return; |
|
4657
93b7ed814bec
updated for version 7.3.1076
Bram Moolenaar <bram@vim.org>
parents:
4655
diff
changeset
|
2807 } |
|
4647
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2808 |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2809 /* See if the same state is already in the list with the same |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2810 * positions. */ |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2811 for (i = 0; i < l->n; ++i) |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2812 { |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2813 thread = &l->t[i]; |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2814 if (thread->state->id == state->id |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2815 && sub_equal(&thread->sub, sub)) |
|
4657
93b7ed814bec
updated for version 7.3.1076
Bram Moolenaar <bram@vim.org>
parents:
4655
diff
changeset
|
2816 goto skip_add; |
|
4647
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2817 } |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2818 } |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2819 |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2820 /* when there are backreferences the number of states may be (a |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2821 * lot) bigger */ |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2822 if (nfa_has_backref && l->n == l->len) |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2823 { |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2824 int newlen = l->len * 3 / 2 + 50; |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2825 |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2826 l->t = vim_realloc(l->t, newlen * sizeof(nfa_thread_T)); |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2827 l->len = newlen; |
|
4571
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2828 } |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2829 |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2830 /* add the state to the list */ |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2831 state->lastlist = l->id; |
|
4647
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2832 thread = &l->t[l->n++]; |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2833 thread->state = state; |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2834 thread->sub.in_use = sub->in_use; |
|
4571
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2835 if (sub->in_use > 0) |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2836 { |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2837 /* Copy the match start and end positions. */ |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2838 if (REG_MULTI) |
|
4647
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2839 mch_memmove(&thread->sub.list.multi[0], |
|
4577
b22bff1a6af8
updated for version 7.3.1036
Bram Moolenaar <bram@vim.org>
parents:
4573
diff
changeset
|
2840 &sub->list.multi[0], |
|
4571
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2841 sizeof(struct multipos) * sub->in_use); |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2842 else |
|
4647
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
2843 mch_memmove(&thread->sub.list.line[0], |
|
4577
b22bff1a6af8
updated for version 7.3.1036
Bram Moolenaar <bram@vim.org>
parents:
4573
diff
changeset
|
2844 &sub->list.line[0], |
|
4571
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2845 sizeof(struct linepos) * sub->in_use); |
| 4444 | 2846 } |
|
4657
93b7ed814bec
updated for version 7.3.1076
Bram Moolenaar <bram@vim.org>
parents:
4655
diff
changeset
|
2847 #ifdef ENABLE_LOG |
|
93b7ed814bec
updated for version 7.3.1076
Bram Moolenaar <bram@vim.org>
parents:
4655
diff
changeset
|
2848 { |
|
93b7ed814bec
updated for version 7.3.1076
Bram Moolenaar <bram@vim.org>
parents:
4655
diff
changeset
|
2849 int col; |
|
93b7ed814bec
updated for version 7.3.1076
Bram Moolenaar <bram@vim.org>
parents:
4655
diff
changeset
|
2850 |
|
93b7ed814bec
updated for version 7.3.1076
Bram Moolenaar <bram@vim.org>
parents:
4655
diff
changeset
|
2851 if (thread->sub.in_use <= 0) |
|
93b7ed814bec
updated for version 7.3.1076
Bram Moolenaar <bram@vim.org>
parents:
4655
diff
changeset
|
2852 col = -1; |
|
93b7ed814bec
updated for version 7.3.1076
Bram Moolenaar <bram@vim.org>
parents:
4655
diff
changeset
|
2853 else if (REG_MULTI) |
|
93b7ed814bec
updated for version 7.3.1076
Bram Moolenaar <bram@vim.org>
parents:
4655
diff
changeset
|
2854 col = thread->sub.list.multi[0].start.col; |
|
93b7ed814bec
updated for version 7.3.1076
Bram Moolenaar <bram@vim.org>
parents:
4655
diff
changeset
|
2855 else |
|
93b7ed814bec
updated for version 7.3.1076
Bram Moolenaar <bram@vim.org>
parents:
4655
diff
changeset
|
2856 col = (int)(thread->sub.list.line[0].start - regline); |
|
93b7ed814bec
updated for version 7.3.1076
Bram Moolenaar <bram@vim.org>
parents:
4655
diff
changeset
|
2857 nfa_set_code(state->c); |
|
93b7ed814bec
updated for version 7.3.1076
Bram Moolenaar <bram@vim.org>
parents:
4655
diff
changeset
|
2858 fprintf(log_fd, "> Adding state %d to list %d. char %d: %s (start col %d)\n", |
|
93b7ed814bec
updated for version 7.3.1076
Bram Moolenaar <bram@vim.org>
parents:
4655
diff
changeset
|
2859 abs(state->id), l->id, state->c, code, col); |
|
93b7ed814bec
updated for version 7.3.1076
Bram Moolenaar <bram@vim.org>
parents:
4655
diff
changeset
|
2860 did_print = TRUE; |
|
93b7ed814bec
updated for version 7.3.1076
Bram Moolenaar <bram@vim.org>
parents:
4655
diff
changeset
|
2861 } |
|
93b7ed814bec
updated for version 7.3.1076
Bram Moolenaar <bram@vim.org>
parents:
4655
diff
changeset
|
2862 #endif |
| 4444 | 2863 } |
| 2864 | |
| 2865 #ifdef ENABLE_LOG | |
|
4657
93b7ed814bec
updated for version 7.3.1076
Bram Moolenaar <bram@vim.org>
parents:
4655
diff
changeset
|
2866 if (!did_print) |
|
93b7ed814bec
updated for version 7.3.1076
Bram Moolenaar <bram@vim.org>
parents:
4655
diff
changeset
|
2867 { |
|
93b7ed814bec
updated for version 7.3.1076
Bram Moolenaar <bram@vim.org>
parents:
4655
diff
changeset
|
2868 int col; |
|
93b7ed814bec
updated for version 7.3.1076
Bram Moolenaar <bram@vim.org>
parents:
4655
diff
changeset
|
2869 |
|
93b7ed814bec
updated for version 7.3.1076
Bram Moolenaar <bram@vim.org>
parents:
4655
diff
changeset
|
2870 if (sub->in_use <= 0) |
|
93b7ed814bec
updated for version 7.3.1076
Bram Moolenaar <bram@vim.org>
parents:
4655
diff
changeset
|
2871 col = -1; |
|
93b7ed814bec
updated for version 7.3.1076
Bram Moolenaar <bram@vim.org>
parents:
4655
diff
changeset
|
2872 else if (REG_MULTI) |
|
93b7ed814bec
updated for version 7.3.1076
Bram Moolenaar <bram@vim.org>
parents:
4655
diff
changeset
|
2873 col = sub->list.multi[0].start.col; |
|
93b7ed814bec
updated for version 7.3.1076
Bram Moolenaar <bram@vim.org>
parents:
4655
diff
changeset
|
2874 else |
|
93b7ed814bec
updated for version 7.3.1076
Bram Moolenaar <bram@vim.org>
parents:
4655
diff
changeset
|
2875 col = (int)(sub->list.line[0].start - regline); |
|
93b7ed814bec
updated for version 7.3.1076
Bram Moolenaar <bram@vim.org>
parents:
4655
diff
changeset
|
2876 nfa_set_code(state->c); |
|
93b7ed814bec
updated for version 7.3.1076
Bram Moolenaar <bram@vim.org>
parents:
4655
diff
changeset
|
2877 fprintf(log_fd, "> Processing state %d for list %d. char %d: %s (start col %d)\n", |
|
93b7ed814bec
updated for version 7.3.1076
Bram Moolenaar <bram@vim.org>
parents:
4655
diff
changeset
|
2878 abs(state->id), l->id, state->c, code, col); |
|
93b7ed814bec
updated for version 7.3.1076
Bram Moolenaar <bram@vim.org>
parents:
4655
diff
changeset
|
2879 } |
| 4444 | 2880 #endif |
| 2881 switch (state->c) | |
| 2882 { | |
| 2883 case NFA_MATCH: | |
|
4561
4d81fdda8f35
updated for version 7.3.1028
Bram Moolenaar <bram@vim.org>
parents:
4559
diff
changeset
|
2884 nfa_match = TRUE; |
| 4444 | 2885 break; |
| 2886 | |
| 2887 case NFA_SPLIT: | |
|
4571
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2888 addstate(l, state->out, sub, off); |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2889 addstate(l, state->out1, sub, off); |
| 4444 | 2890 break; |
| 2891 | |
| 2892 #if 0 | |
| 2893 case NFA_END_NEG_RANGE: | |
| 2894 /* Nothing to handle here. nfa_regmatch() will take care of it */ | |
| 2895 break; | |
| 2896 | |
| 2897 case NFA_NOT: | |
| 2898 EMSG(_("E999: (NFA regexp internal error) Should not process NOT node !")); | |
| 2899 #ifdef ENABLE_LOG | |
| 2900 fprintf(f, "\n\n>>> E999: Added state NFA_NOT to a list ... Something went wrong ! Why wasn't it processed already? \n\n"); | |
| 2901 #endif | |
| 2902 break; | |
| 2903 | |
| 2904 case NFA_COMPOSING: | |
| 2905 /* nfa_regmatch() will match all the bytes of this composing char. */ | |
| 2906 break; | |
| 2907 #endif | |
| 2908 | |
|
4571
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2909 case NFA_SKIP_CHAR: |
| 4444 | 2910 case NFA_NOPEN: |
| 2911 case NFA_NCLOSE: | |
|
4571
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2912 addstate(l, state->out, sub, off); |
| 4444 | 2913 break; |
| 2914 | |
| 2915 case NFA_MOPEN + 0: | |
| 2916 case NFA_MOPEN + 1: | |
| 2917 case NFA_MOPEN + 2: | |
| 2918 case NFA_MOPEN + 3: | |
| 2919 case NFA_MOPEN + 4: | |
| 2920 case NFA_MOPEN + 5: | |
| 2921 case NFA_MOPEN + 6: | |
| 2922 case NFA_MOPEN + 7: | |
| 2923 case NFA_MOPEN + 8: | |
| 2924 case NFA_MOPEN + 9: | |
| 2925 case NFA_ZSTART: | |
| 2926 if (state->c == NFA_ZSTART) | |
| 2927 subidx = 0; | |
|
4561
4d81fdda8f35
updated for version 7.3.1028
Bram Moolenaar <bram@vim.org>
parents:
4559
diff
changeset
|
2928 else |
|
4d81fdda8f35
updated for version 7.3.1028
Bram Moolenaar <bram@vim.org>
parents:
4559
diff
changeset
|
2929 subidx = state->c - NFA_MOPEN; |
| 4444 | 2930 |
|
4563
e7016af0cbf9
updated for version 7.3.1029
Bram Moolenaar <bram@vim.org>
parents:
4561
diff
changeset
|
2931 /* Set the position (with "off") in the subexpression. Save and |
|
e7016af0cbf9
updated for version 7.3.1029
Bram Moolenaar <bram@vim.org>
parents:
4561
diff
changeset
|
2932 * restore it when it was in use. Otherwise fill any gap. */ |
|
4649
9f502d8d5165
updated for version 7.3.1072
Bram Moolenaar <bram@vim.org>
parents:
4647
diff
changeset
|
2933 save_ptr = NULL; |
| 4444 | 2934 if (REG_MULTI) |
| 2935 { | |
|
4571
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2936 if (subidx < sub->in_use) |
|
4563
e7016af0cbf9
updated for version 7.3.1029
Bram Moolenaar <bram@vim.org>
parents:
4561
diff
changeset
|
2937 { |
|
4577
b22bff1a6af8
updated for version 7.3.1036
Bram Moolenaar <bram@vim.org>
parents:
4573
diff
changeset
|
2938 save_lpos = sub->list.multi[subidx].start; |
|
4563
e7016af0cbf9
updated for version 7.3.1029
Bram Moolenaar <bram@vim.org>
parents:
4561
diff
changeset
|
2939 save_in_use = -1; |
|
e7016af0cbf9
updated for version 7.3.1029
Bram Moolenaar <bram@vim.org>
parents:
4561
diff
changeset
|
2940 } |
|
e7016af0cbf9
updated for version 7.3.1029
Bram Moolenaar <bram@vim.org>
parents:
4561
diff
changeset
|
2941 else |
|
e7016af0cbf9
updated for version 7.3.1029
Bram Moolenaar <bram@vim.org>
parents:
4561
diff
changeset
|
2942 { |
|
4571
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2943 save_in_use = sub->in_use; |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2944 for (i = sub->in_use; i < subidx; ++i) |
|
4563
e7016af0cbf9
updated for version 7.3.1029
Bram Moolenaar <bram@vim.org>
parents:
4561
diff
changeset
|
2945 { |
|
4577
b22bff1a6af8
updated for version 7.3.1036
Bram Moolenaar <bram@vim.org>
parents:
4573
diff
changeset
|
2946 sub->list.multi[i].start.lnum = -1; |
|
b22bff1a6af8
updated for version 7.3.1036
Bram Moolenaar <bram@vim.org>
parents:
4573
diff
changeset
|
2947 sub->list.multi[i].end.lnum = -1; |
|
4563
e7016af0cbf9
updated for version 7.3.1029
Bram Moolenaar <bram@vim.org>
parents:
4561
diff
changeset
|
2948 } |
|
4571
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2949 sub->in_use = subidx + 1; |
|
4563
e7016af0cbf9
updated for version 7.3.1029
Bram Moolenaar <bram@vim.org>
parents:
4561
diff
changeset
|
2950 } |
|
4515
90e9917d4114
updated for version 7.3.1005
Bram Moolenaar <bram@vim.org>
parents:
4507
diff
changeset
|
2951 if (off == -1) |
|
90e9917d4114
updated for version 7.3.1005
Bram Moolenaar <bram@vim.org>
parents:
4507
diff
changeset
|
2952 { |
|
4577
b22bff1a6af8
updated for version 7.3.1036
Bram Moolenaar <bram@vim.org>
parents:
4573
diff
changeset
|
2953 sub->list.multi[subidx].start.lnum = reglnum + 1; |
|
b22bff1a6af8
updated for version 7.3.1036
Bram Moolenaar <bram@vim.org>
parents:
4573
diff
changeset
|
2954 sub->list.multi[subidx].start.col = 0; |
|
4515
90e9917d4114
updated for version 7.3.1005
Bram Moolenaar <bram@vim.org>
parents:
4507
diff
changeset
|
2955 } |
|
90e9917d4114
updated for version 7.3.1005
Bram Moolenaar <bram@vim.org>
parents:
4507
diff
changeset
|
2956 else |
|
90e9917d4114
updated for version 7.3.1005
Bram Moolenaar <bram@vim.org>
parents:
4507
diff
changeset
|
2957 { |
|
4577
b22bff1a6af8
updated for version 7.3.1036
Bram Moolenaar <bram@vim.org>
parents:
4573
diff
changeset
|
2958 sub->list.multi[subidx].start.lnum = reglnum; |
|
b22bff1a6af8
updated for version 7.3.1036
Bram Moolenaar <bram@vim.org>
parents:
4573
diff
changeset
|
2959 sub->list.multi[subidx].start.col = |
|
4515
90e9917d4114
updated for version 7.3.1005
Bram Moolenaar <bram@vim.org>
parents:
4507
diff
changeset
|
2960 (colnr_T)(reginput - regline + off); |
|
90e9917d4114
updated for version 7.3.1005
Bram Moolenaar <bram@vim.org>
parents:
4507
diff
changeset
|
2961 } |
| 4444 | 2962 } |
| 2963 else | |
| 2964 { | |
|
4571
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2965 if (subidx < sub->in_use) |
|
4563
e7016af0cbf9
updated for version 7.3.1029
Bram Moolenaar <bram@vim.org>
parents:
4561
diff
changeset
|
2966 { |
|
4577
b22bff1a6af8
updated for version 7.3.1036
Bram Moolenaar <bram@vim.org>
parents:
4573
diff
changeset
|
2967 save_ptr = sub->list.line[subidx].start; |
|
4563
e7016af0cbf9
updated for version 7.3.1029
Bram Moolenaar <bram@vim.org>
parents:
4561
diff
changeset
|
2968 save_in_use = -1; |
|
e7016af0cbf9
updated for version 7.3.1029
Bram Moolenaar <bram@vim.org>
parents:
4561
diff
changeset
|
2969 } |
|
e7016af0cbf9
updated for version 7.3.1029
Bram Moolenaar <bram@vim.org>
parents:
4561
diff
changeset
|
2970 else |
|
e7016af0cbf9
updated for version 7.3.1029
Bram Moolenaar <bram@vim.org>
parents:
4561
diff
changeset
|
2971 { |
|
4571
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2972 save_in_use = sub->in_use; |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2973 for (i = sub->in_use; i < subidx; ++i) |
|
4563
e7016af0cbf9
updated for version 7.3.1029
Bram Moolenaar <bram@vim.org>
parents:
4561
diff
changeset
|
2974 { |
|
4577
b22bff1a6af8
updated for version 7.3.1036
Bram Moolenaar <bram@vim.org>
parents:
4573
diff
changeset
|
2975 sub->list.line[i].start = NULL; |
|
b22bff1a6af8
updated for version 7.3.1036
Bram Moolenaar <bram@vim.org>
parents:
4573
diff
changeset
|
2976 sub->list.line[i].end = NULL; |
|
4563
e7016af0cbf9
updated for version 7.3.1029
Bram Moolenaar <bram@vim.org>
parents:
4561
diff
changeset
|
2977 } |
|
4571
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2978 sub->in_use = subidx + 1; |
|
4563
e7016af0cbf9
updated for version 7.3.1029
Bram Moolenaar <bram@vim.org>
parents:
4561
diff
changeset
|
2979 } |
|
4577
b22bff1a6af8
updated for version 7.3.1036
Bram Moolenaar <bram@vim.org>
parents:
4573
diff
changeset
|
2980 sub->list.line[subidx].start = reginput + off; |
| 4444 | 2981 } |
| 2982 | |
|
4571
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2983 addstate(l, state->out, sub, off); |
| 4444 | 2984 |
|
4563
e7016af0cbf9
updated for version 7.3.1029
Bram Moolenaar <bram@vim.org>
parents:
4561
diff
changeset
|
2985 if (save_in_use == -1) |
|
e7016af0cbf9
updated for version 7.3.1029
Bram Moolenaar <bram@vim.org>
parents:
4561
diff
changeset
|
2986 { |
|
e7016af0cbf9
updated for version 7.3.1029
Bram Moolenaar <bram@vim.org>
parents:
4561
diff
changeset
|
2987 if (REG_MULTI) |
|
4577
b22bff1a6af8
updated for version 7.3.1036
Bram Moolenaar <bram@vim.org>
parents:
4573
diff
changeset
|
2988 sub->list.multi[subidx].start = save_lpos; |
|
4563
e7016af0cbf9
updated for version 7.3.1029
Bram Moolenaar <bram@vim.org>
parents:
4561
diff
changeset
|
2989 else |
|
4577
b22bff1a6af8
updated for version 7.3.1036
Bram Moolenaar <bram@vim.org>
parents:
4573
diff
changeset
|
2990 sub->list.line[subidx].start = save_ptr; |
|
4563
e7016af0cbf9
updated for version 7.3.1029
Bram Moolenaar <bram@vim.org>
parents:
4561
diff
changeset
|
2991 } |
| 4444 | 2992 else |
|
4571
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
2993 sub->in_use = save_in_use; |
| 4444 | 2994 break; |
| 2995 | |
| 2996 case NFA_MCLOSE + 0: | |
|
4553
7b835b2969af
updated for version 7.3.1024
Bram Moolenaar <bram@vim.org>
parents:
4551
diff
changeset
|
2997 if (nfa_has_zend) |
| 4444 | 2998 { |
|
4569
f262fb02889d
updated for version 7.3.1032
Bram Moolenaar <bram@vim.org>
parents:
4567
diff
changeset
|
2999 /* Do not overwrite the position set by \ze. If no \ze |
|
f262fb02889d
updated for version 7.3.1032
Bram Moolenaar <bram@vim.org>
parents:
4567
diff
changeset
|
3000 * encountered end will be set in nfa_regtry(). */ |
|
4571
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3001 addstate(l, state->out, sub, off); |
| 4444 | 3002 break; |
| 3003 } | |
| 3004 case NFA_MCLOSE + 1: | |
| 3005 case NFA_MCLOSE + 2: | |
| 3006 case NFA_MCLOSE + 3: | |
| 3007 case NFA_MCLOSE + 4: | |
| 3008 case NFA_MCLOSE + 5: | |
| 3009 case NFA_MCLOSE + 6: | |
| 3010 case NFA_MCLOSE + 7: | |
| 3011 case NFA_MCLOSE + 8: | |
| 3012 case NFA_MCLOSE + 9: | |
| 3013 case NFA_ZEND: | |
| 3014 if (state->c == NFA_ZEND) | |
| 3015 subidx = 0; | |
|
4561
4d81fdda8f35
updated for version 7.3.1028
Bram Moolenaar <bram@vim.org>
parents:
4559
diff
changeset
|
3016 else |
|
4d81fdda8f35
updated for version 7.3.1028
Bram Moolenaar <bram@vim.org>
parents:
4559
diff
changeset
|
3017 subidx = state->c - NFA_MCLOSE; |
| 4444 | 3018 |
|
4563
e7016af0cbf9
updated for version 7.3.1029
Bram Moolenaar <bram@vim.org>
parents:
4561
diff
changeset
|
3019 /* We don't fill in gaps here, there must have been an MOPEN that |
|
e7016af0cbf9
updated for version 7.3.1029
Bram Moolenaar <bram@vim.org>
parents:
4561
diff
changeset
|
3020 * has done that. */ |
|
4571
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3021 save_in_use = sub->in_use; |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3022 if (sub->in_use <= subidx) |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3023 sub->in_use = subidx + 1; |
| 4444 | 3024 if (REG_MULTI) |
| 3025 { | |
|
4577
b22bff1a6af8
updated for version 7.3.1036
Bram Moolenaar <bram@vim.org>
parents:
4573
diff
changeset
|
3026 save_lpos = sub->list.multi[subidx].end; |
|
4515
90e9917d4114
updated for version 7.3.1005
Bram Moolenaar <bram@vim.org>
parents:
4507
diff
changeset
|
3027 if (off == -1) |
|
90e9917d4114
updated for version 7.3.1005
Bram Moolenaar <bram@vim.org>
parents:
4507
diff
changeset
|
3028 { |
|
4577
b22bff1a6af8
updated for version 7.3.1036
Bram Moolenaar <bram@vim.org>
parents:
4573
diff
changeset
|
3029 sub->list.multi[subidx].end.lnum = reglnum + 1; |
|
b22bff1a6af8
updated for version 7.3.1036
Bram Moolenaar <bram@vim.org>
parents:
4573
diff
changeset
|
3030 sub->list.multi[subidx].end.col = 0; |
|
4515
90e9917d4114
updated for version 7.3.1005
Bram Moolenaar <bram@vim.org>
parents:
4507
diff
changeset
|
3031 } |
|
90e9917d4114
updated for version 7.3.1005
Bram Moolenaar <bram@vim.org>
parents:
4507
diff
changeset
|
3032 else |
|
90e9917d4114
updated for version 7.3.1005
Bram Moolenaar <bram@vim.org>
parents:
4507
diff
changeset
|
3033 { |
|
4577
b22bff1a6af8
updated for version 7.3.1036
Bram Moolenaar <bram@vim.org>
parents:
4573
diff
changeset
|
3034 sub->list.multi[subidx].end.lnum = reglnum; |
|
b22bff1a6af8
updated for version 7.3.1036
Bram Moolenaar <bram@vim.org>
parents:
4573
diff
changeset
|
3035 sub->list.multi[subidx].end.col = |
|
4561
4d81fdda8f35
updated for version 7.3.1028
Bram Moolenaar <bram@vim.org>
parents:
4559
diff
changeset
|
3036 (colnr_T)(reginput - regline + off); |
|
4515
90e9917d4114
updated for version 7.3.1005
Bram Moolenaar <bram@vim.org>
parents:
4507
diff
changeset
|
3037 } |
| 4444 | 3038 } |
| 3039 else | |
| 3040 { | |
|
4577
b22bff1a6af8
updated for version 7.3.1036
Bram Moolenaar <bram@vim.org>
parents:
4573
diff
changeset
|
3041 save_ptr = sub->list.line[subidx].end; |
|
b22bff1a6af8
updated for version 7.3.1036
Bram Moolenaar <bram@vim.org>
parents:
4573
diff
changeset
|
3042 sub->list.line[subidx].end = reginput + off; |
| 4444 | 3043 } |
| 3044 | |
|
4571
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3045 addstate(l, state->out, sub, off); |
| 4444 | 3046 |
| 3047 if (REG_MULTI) | |
|
4577
b22bff1a6af8
updated for version 7.3.1036
Bram Moolenaar <bram@vim.org>
parents:
4573
diff
changeset
|
3048 sub->list.multi[subidx].end = save_lpos; |
| 4444 | 3049 else |
|
4577
b22bff1a6af8
updated for version 7.3.1036
Bram Moolenaar <bram@vim.org>
parents:
4573
diff
changeset
|
3050 sub->list.line[subidx].end = save_ptr; |
|
4571
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3051 sub->in_use = save_in_use; |
| 4444 | 3052 break; |
| 3053 } | |
| 3054 } | |
| 3055 | |
| 3056 /* | |
|
4539
532c2e850256
updated for version 7.3.1017
Bram Moolenaar <bram@vim.org>
parents:
4537
diff
changeset
|
3057 * Like addstate(), but the new state(s) are put at position "*ip". |
|
532c2e850256
updated for version 7.3.1017
Bram Moolenaar <bram@vim.org>
parents:
4537
diff
changeset
|
3058 * Used for zero-width matches, next state to use is the added one. |
|
532c2e850256
updated for version 7.3.1017
Bram Moolenaar <bram@vim.org>
parents:
4537
diff
changeset
|
3059 * This makes sure the order of states to be tried does not change, which |
|
532c2e850256
updated for version 7.3.1017
Bram Moolenaar <bram@vim.org>
parents:
4537
diff
changeset
|
3060 * matters for alternatives. |
|
532c2e850256
updated for version 7.3.1017
Bram Moolenaar <bram@vim.org>
parents:
4537
diff
changeset
|
3061 */ |
|
532c2e850256
updated for version 7.3.1017
Bram Moolenaar <bram@vim.org>
parents:
4537
diff
changeset
|
3062 static void |
|
4571
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3063 addstate_here(l, state, sub, ip) |
|
4539
532c2e850256
updated for version 7.3.1017
Bram Moolenaar <bram@vim.org>
parents:
4537
diff
changeset
|
3064 nfa_list_T *l; /* runtime state list */ |
|
532c2e850256
updated for version 7.3.1017
Bram Moolenaar <bram@vim.org>
parents:
4537
diff
changeset
|
3065 nfa_state_T *state; /* state to update */ |
|
4571
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3066 regsub_T *sub; /* pointers to subexpressions */ |
|
4539
532c2e850256
updated for version 7.3.1017
Bram Moolenaar <bram@vim.org>
parents:
4537
diff
changeset
|
3067 int *ip; |
|
532c2e850256
updated for version 7.3.1017
Bram Moolenaar <bram@vim.org>
parents:
4537
diff
changeset
|
3068 { |
|
532c2e850256
updated for version 7.3.1017
Bram Moolenaar <bram@vim.org>
parents:
4537
diff
changeset
|
3069 int tlen = l->n; |
|
532c2e850256
updated for version 7.3.1017
Bram Moolenaar <bram@vim.org>
parents:
4537
diff
changeset
|
3070 int count; |
|
532c2e850256
updated for version 7.3.1017
Bram Moolenaar <bram@vim.org>
parents:
4537
diff
changeset
|
3071 int i = *ip; |
|
532c2e850256
updated for version 7.3.1017
Bram Moolenaar <bram@vim.org>
parents:
4537
diff
changeset
|
3072 |
|
532c2e850256
updated for version 7.3.1017
Bram Moolenaar <bram@vim.org>
parents:
4537
diff
changeset
|
3073 /* first add the state(s) at the end, so that we know how many there are */ |
|
4571
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3074 addstate(l, state, sub, 0); |
|
4539
532c2e850256
updated for version 7.3.1017
Bram Moolenaar <bram@vim.org>
parents:
4537
diff
changeset
|
3075 |
|
532c2e850256
updated for version 7.3.1017
Bram Moolenaar <bram@vim.org>
parents:
4537
diff
changeset
|
3076 /* when "*ip" was at the end of the list, nothing to do */ |
|
532c2e850256
updated for version 7.3.1017
Bram Moolenaar <bram@vim.org>
parents:
4537
diff
changeset
|
3077 if (i + 1 == tlen) |
|
532c2e850256
updated for version 7.3.1017
Bram Moolenaar <bram@vim.org>
parents:
4537
diff
changeset
|
3078 return; |
|
532c2e850256
updated for version 7.3.1017
Bram Moolenaar <bram@vim.org>
parents:
4537
diff
changeset
|
3079 |
|
532c2e850256
updated for version 7.3.1017
Bram Moolenaar <bram@vim.org>
parents:
4537
diff
changeset
|
3080 /* re-order to put the new state at the current position */ |
|
532c2e850256
updated for version 7.3.1017
Bram Moolenaar <bram@vim.org>
parents:
4537
diff
changeset
|
3081 count = l->n - tlen; |
|
4647
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
3082 if (count == 1) |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
3083 { |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
3084 /* overwrite the current state */ |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
3085 l->t[i] = l->t[l->n - 1]; |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
3086 } |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
3087 else if (count > 1) |
|
4539
532c2e850256
updated for version 7.3.1017
Bram Moolenaar <bram@vim.org>
parents:
4537
diff
changeset
|
3088 { |
|
532c2e850256
updated for version 7.3.1017
Bram Moolenaar <bram@vim.org>
parents:
4537
diff
changeset
|
3089 /* make space for new states, then move them from the |
|
532c2e850256
updated for version 7.3.1017
Bram Moolenaar <bram@vim.org>
parents:
4537
diff
changeset
|
3090 * end to the current position */ |
|
532c2e850256
updated for version 7.3.1017
Bram Moolenaar <bram@vim.org>
parents:
4537
diff
changeset
|
3091 mch_memmove(&(l->t[i + count]), |
|
532c2e850256
updated for version 7.3.1017
Bram Moolenaar <bram@vim.org>
parents:
4537
diff
changeset
|
3092 &(l->t[i + 1]), |
|
532c2e850256
updated for version 7.3.1017
Bram Moolenaar <bram@vim.org>
parents:
4537
diff
changeset
|
3093 sizeof(nfa_thread_T) * (l->n - i - 1)); |
|
532c2e850256
updated for version 7.3.1017
Bram Moolenaar <bram@vim.org>
parents:
4537
diff
changeset
|
3094 mch_memmove(&(l->t[i]), |
|
532c2e850256
updated for version 7.3.1017
Bram Moolenaar <bram@vim.org>
parents:
4537
diff
changeset
|
3095 &(l->t[l->n - 1]), |
|
532c2e850256
updated for version 7.3.1017
Bram Moolenaar <bram@vim.org>
parents:
4537
diff
changeset
|
3096 sizeof(nfa_thread_T) * count); |
|
532c2e850256
updated for version 7.3.1017
Bram Moolenaar <bram@vim.org>
parents:
4537
diff
changeset
|
3097 } |
|
532c2e850256
updated for version 7.3.1017
Bram Moolenaar <bram@vim.org>
parents:
4537
diff
changeset
|
3098 --l->n; |
|
532c2e850256
updated for version 7.3.1017
Bram Moolenaar <bram@vim.org>
parents:
4537
diff
changeset
|
3099 *ip = i - 1; |
|
532c2e850256
updated for version 7.3.1017
Bram Moolenaar <bram@vim.org>
parents:
4537
diff
changeset
|
3100 } |
|
532c2e850256
updated for version 7.3.1017
Bram Moolenaar <bram@vim.org>
parents:
4537
diff
changeset
|
3101 |
|
532c2e850256
updated for version 7.3.1017
Bram Moolenaar <bram@vim.org>
parents:
4537
diff
changeset
|
3102 /* |
| 4444 | 3103 * Check character class "class" against current character c. |
| 3104 */ | |
| 3105 static int | |
| 3106 check_char_class(class, c) | |
| 3107 int class; | |
| 3108 int c; | |
| 3109 { | |
| 3110 switch (class) | |
| 3111 { | |
| 3112 case NFA_CLASS_ALNUM: | |
| 4464 | 3113 if (c >= 1 && c <= 255 && isalnum(c)) |
| 4444 | 3114 return OK; |
| 3115 break; | |
| 3116 case NFA_CLASS_ALPHA: | |
| 4464 | 3117 if (c >= 1 && c <= 255 && isalpha(c)) |
| 4444 | 3118 return OK; |
| 3119 break; | |
| 3120 case NFA_CLASS_BLANK: | |
| 3121 if (c == ' ' || c == '\t') | |
| 3122 return OK; | |
| 3123 break; | |
| 3124 case NFA_CLASS_CNTRL: | |
| 4464 | 3125 if (c >= 1 && c <= 255 && iscntrl(c)) |
| 4444 | 3126 return OK; |
| 3127 break; | |
| 3128 case NFA_CLASS_DIGIT: | |
| 3129 if (VIM_ISDIGIT(c)) | |
| 3130 return OK; | |
| 3131 break; | |
| 3132 case NFA_CLASS_GRAPH: | |
| 4464 | 3133 if (c >= 1 && c <= 255 && isgraph(c)) |
| 4444 | 3134 return OK; |
| 3135 break; | |
| 3136 case NFA_CLASS_LOWER: | |
| 3137 if (MB_ISLOWER(c)) | |
| 3138 return OK; | |
| 3139 break; | |
| 3140 case NFA_CLASS_PRINT: | |
| 3141 if (vim_isprintc(c)) | |
| 3142 return OK; | |
| 3143 break; | |
| 3144 case NFA_CLASS_PUNCT: | |
| 4464 | 3145 if (c >= 1 && c <= 255 && ispunct(c)) |
| 4444 | 3146 return OK; |
| 3147 break; | |
| 3148 case NFA_CLASS_SPACE: | |
| 3149 if ((c >=9 && c <= 13) || (c == ' ')) | |
| 3150 return OK; | |
| 3151 break; | |
| 3152 case NFA_CLASS_UPPER: | |
| 3153 if (MB_ISUPPER(c)) | |
| 3154 return OK; | |
| 3155 break; | |
| 3156 case NFA_CLASS_XDIGIT: | |
| 3157 if (vim_isxdigit(c)) | |
| 3158 return OK; | |
| 3159 break; | |
| 3160 case NFA_CLASS_TAB: | |
| 3161 if (c == '\t') | |
| 3162 return OK; | |
| 3163 break; | |
| 3164 case NFA_CLASS_RETURN: | |
| 3165 if (c == '\r') | |
| 3166 return OK; | |
| 3167 break; | |
| 3168 case NFA_CLASS_BACKSPACE: | |
| 3169 if (c == '\b') | |
| 3170 return OK; | |
| 3171 break; | |
| 3172 case NFA_CLASS_ESCAPE: | |
| 3173 if (c == '\033') | |
| 3174 return OK; | |
| 3175 break; | |
| 3176 | |
| 3177 default: | |
| 3178 /* should not be here :P */ | |
| 3179 EMSG_RET_FAIL(_("E877: (NFA regexp) Invalid character class ")); | |
| 3180 } | |
| 3181 return FAIL; | |
| 3182 } | |
| 3183 | |
|
4571
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3184 static int match_backref __ARGS((regsub_T *sub, int subidx, int *bytelen)); |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3185 |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3186 /* |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3187 * Check for a match with subexpression "subidx". |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3188 * return TRUE if it matches. |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3189 */ |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3190 static int |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3191 match_backref(sub, subidx, bytelen) |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3192 regsub_T *sub; /* pointers to subexpressions */ |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3193 int subidx; |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3194 int *bytelen; /* out: length of match in bytes */ |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3195 { |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3196 int len; |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3197 |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3198 if (sub->in_use <= subidx) |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3199 { |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3200 retempty: |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3201 /* backref was not set, match an empty string */ |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3202 *bytelen = 0; |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3203 return TRUE; |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3204 } |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3205 |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3206 if (REG_MULTI) |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3207 { |
|
4577
b22bff1a6af8
updated for version 7.3.1036
Bram Moolenaar <bram@vim.org>
parents:
4573
diff
changeset
|
3208 if (sub->list.multi[subidx].start.lnum < 0 |
|
b22bff1a6af8
updated for version 7.3.1036
Bram Moolenaar <bram@vim.org>
parents:
4573
diff
changeset
|
3209 || sub->list.multi[subidx].end.lnum < 0) |
|
4571
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3210 goto retempty; |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3211 /* TODO: line breaks */ |
|
4577
b22bff1a6af8
updated for version 7.3.1036
Bram Moolenaar <bram@vim.org>
parents:
4573
diff
changeset
|
3212 len = sub->list.multi[subidx].end.col |
|
b22bff1a6af8
updated for version 7.3.1036
Bram Moolenaar <bram@vim.org>
parents:
4573
diff
changeset
|
3213 - sub->list.multi[subidx].start.col; |
|
b22bff1a6af8
updated for version 7.3.1036
Bram Moolenaar <bram@vim.org>
parents:
4573
diff
changeset
|
3214 if (cstrncmp(regline + sub->list.multi[subidx].start.col, |
|
4571
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3215 reginput, &len) == 0) |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3216 { |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3217 *bytelen = len; |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3218 return TRUE; |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3219 } |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3220 } |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3221 else |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3222 { |
|
4577
b22bff1a6af8
updated for version 7.3.1036
Bram Moolenaar <bram@vim.org>
parents:
4573
diff
changeset
|
3223 if (sub->list.line[subidx].start == NULL |
|
b22bff1a6af8
updated for version 7.3.1036
Bram Moolenaar <bram@vim.org>
parents:
4573
diff
changeset
|
3224 || sub->list.line[subidx].end == NULL) |
|
4571
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3225 goto retempty; |
|
4577
b22bff1a6af8
updated for version 7.3.1036
Bram Moolenaar <bram@vim.org>
parents:
4573
diff
changeset
|
3226 len = (int)(sub->list.line[subidx].end - sub->list.line[subidx].start); |
|
b22bff1a6af8
updated for version 7.3.1036
Bram Moolenaar <bram@vim.org>
parents:
4573
diff
changeset
|
3227 if (cstrncmp(sub->list.line[subidx].start, reginput, &len) == 0) |
|
4571
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3228 { |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3229 *bytelen = len; |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3230 return TRUE; |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3231 } |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3232 } |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3233 return FALSE; |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3234 } |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3235 |
| 4444 | 3236 /* |
| 3237 * Set all NFA nodes' list ID equal to -1. | |
| 3238 */ | |
| 3239 static void | |
| 3240 nfa_set_neg_listids(start) | |
| 3241 nfa_state_T *start; | |
| 3242 { | |
|
4571
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3243 if (start != NULL && start->lastlist >= 0) |
| 4444 | 3244 { |
| 3245 start->lastlist = -1; | |
| 3246 nfa_set_neg_listids(start->out); | |
| 3247 nfa_set_neg_listids(start->out1); | |
| 3248 } | |
| 3249 } | |
| 3250 | |
| 3251 /* | |
| 3252 * Set all NFA nodes' list ID equal to 0. | |
| 3253 */ | |
| 3254 static void | |
| 3255 nfa_set_null_listids(start) | |
| 3256 nfa_state_T *start; | |
| 3257 { | |
|
4571
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3258 if (start != NULL && start->lastlist == -1) |
| 4444 | 3259 { |
| 3260 start->lastlist = 0; | |
| 3261 nfa_set_null_listids(start->out); | |
| 3262 nfa_set_null_listids(start->out1); | |
| 3263 } | |
| 3264 } | |
| 3265 | |
| 3266 /* | |
| 3267 * Save list IDs for all NFA states in "list". | |
| 3268 */ | |
| 3269 static void | |
| 3270 nfa_save_listids(start, list) | |
| 3271 nfa_state_T *start; | |
| 3272 int *list; | |
| 3273 { | |
|
4571
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3274 if (start != NULL && start->lastlist != -1) |
| 4444 | 3275 { |
| 3276 list[abs(start->id)] = start->lastlist; | |
| 3277 start->lastlist = -1; | |
| 3278 nfa_save_listids(start->out, list); | |
| 3279 nfa_save_listids(start->out1, list); | |
| 3280 } | |
| 3281 } | |
| 3282 | |
| 3283 /* | |
| 3284 * Restore list IDs from "list" to all NFA states. | |
| 3285 */ | |
| 3286 static void | |
| 3287 nfa_restore_listids(start, list) | |
| 3288 nfa_state_T *start; | |
| 3289 int *list; | |
| 3290 { | |
|
4571
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3291 if (start != NULL && start->lastlist == -1) |
| 4444 | 3292 { |
| 3293 start->lastlist = list[abs(start->id)]; | |
| 3294 nfa_restore_listids(start->out, list); | |
| 3295 nfa_restore_listids(start->out1, list); | |
| 3296 } | |
| 3297 } | |
| 3298 | |
|
4583
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
3299 static int |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
3300 nfa_re_num_cmp(val, op, pos) |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
3301 long_u val; |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
3302 int op; |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
3303 long_u pos; |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
3304 { |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
3305 if (op == 1) return pos > val; |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
3306 if (op == 2) return pos < val; |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
3307 return val == pos; |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
3308 } |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
3309 |
|
4563
e7016af0cbf9
updated for version 7.3.1029
Bram Moolenaar <bram@vim.org>
parents:
4561
diff
changeset
|
3310 static int nfa_regmatch __ARGS((nfa_state_T *start, regsub_T *submatch, regsub_T *m)); |
|
e7016af0cbf9
updated for version 7.3.1029
Bram Moolenaar <bram@vim.org>
parents:
4561
diff
changeset
|
3311 |
| 4444 | 3312 /* |
| 3313 * Main matching routine. | |
| 3314 * | |
| 3315 * Run NFA to determine whether it matches reginput. | |
| 3316 * | |
| 3317 * Return TRUE if there is a match, FALSE otherwise. | |
| 3318 * Note: Caller must ensure that: start != NULL. | |
| 3319 */ | |
| 3320 static int | |
| 3321 nfa_regmatch(start, submatch, m) | |
| 3322 nfa_state_T *start; | |
| 3323 regsub_T *submatch; | |
| 3324 regsub_T *m; | |
| 3325 { | |
| 3326 int result; | |
| 3327 int size = 0; | |
| 3328 int flag = 0; | |
|
4539
532c2e850256
updated for version 7.3.1017
Bram Moolenaar <bram@vim.org>
parents:
4537
diff
changeset
|
3329 int go_to_nextline = FALSE; |
|
532c2e850256
updated for version 7.3.1017
Bram Moolenaar <bram@vim.org>
parents:
4537
diff
changeset
|
3330 nfa_thread_T *t; |
|
532c2e850256
updated for version 7.3.1017
Bram Moolenaar <bram@vim.org>
parents:
4537
diff
changeset
|
3331 nfa_list_T list[3]; |
|
532c2e850256
updated for version 7.3.1017
Bram Moolenaar <bram@vim.org>
parents:
4537
diff
changeset
|
3332 nfa_list_T *listtbl[2][2]; |
|
532c2e850256
updated for version 7.3.1017
Bram Moolenaar <bram@vim.org>
parents:
4537
diff
changeset
|
3333 nfa_list_T *ll; |
| 4444 | 3334 int listid = 1; |
|
4549
849180347ac3
updated for version 7.3.1022
Bram Moolenaar <bram@vim.org>
parents:
4547
diff
changeset
|
3335 int listidx; |
|
4539
532c2e850256
updated for version 7.3.1017
Bram Moolenaar <bram@vim.org>
parents:
4537
diff
changeset
|
3336 nfa_list_T *thislist; |
|
532c2e850256
updated for version 7.3.1017
Bram Moolenaar <bram@vim.org>
parents:
4537
diff
changeset
|
3337 nfa_list_T *nextlist; |
|
532c2e850256
updated for version 7.3.1017
Bram Moolenaar <bram@vim.org>
parents:
4537
diff
changeset
|
3338 nfa_list_T *neglist; |
| 4444 | 3339 int *listids = NULL; |
| 4460 | 3340 #ifdef NFA_REGEXP_DEBUG_LOG |
|
4531
1be43c095aff
updated for version 7.3.1013
Bram Moolenaar <bram@vim.org>
parents:
4529
diff
changeset
|
3341 FILE *debug = fopen(NFA_REGEXP_DEBUG_LOG, "a"); |
| 4444 | 3342 |
| 3343 if (debug == NULL) | |
| 3344 { | |
|
4531
1be43c095aff
updated for version 7.3.1013
Bram Moolenaar <bram@vim.org>
parents:
4529
diff
changeset
|
3345 EMSG2(_("(NFA) COULD NOT OPEN %s !"), NFA_REGEXP_DEBUG_LOG); |
| 4444 | 3346 return FALSE; |
| 3347 } | |
| 3348 #endif | |
|
4561
4d81fdda8f35
updated for version 7.3.1028
Bram Moolenaar <bram@vim.org>
parents:
4559
diff
changeset
|
3349 nfa_match = FALSE; |
| 4444 | 3350 |
|
4563
e7016af0cbf9
updated for version 7.3.1029
Bram Moolenaar <bram@vim.org>
parents:
4561
diff
changeset
|
3351 /* Allocate memory for the lists of nodes. */ |
|
4539
532c2e850256
updated for version 7.3.1017
Bram Moolenaar <bram@vim.org>
parents:
4537
diff
changeset
|
3352 size = (nstate + 1) * sizeof(nfa_thread_T); |
|
4647
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
3353 list[0].t = (nfa_thread_T *)lalloc_clear(size, TRUE); |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
3354 list[0].len = nstate + 1; |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
3355 list[1].t = (nfa_thread_T *)lalloc_clear(size, TRUE); |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
3356 list[1].len = nstate + 1; |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
3357 list[2].t = (nfa_thread_T *)lalloc_clear(size, TRUE); |
|
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
3358 list[2].len = nstate + 1; |
| 4444 | 3359 if (list[0].t == NULL || list[1].t == NULL || list[2].t == NULL) |
| 3360 goto theend; | |
| 3361 | |
| 3362 #ifdef ENABLE_LOG | |
|
4531
1be43c095aff
updated for version 7.3.1013
Bram Moolenaar <bram@vim.org>
parents:
4529
diff
changeset
|
3363 log_fd = fopen(NFA_REGEXP_RUN_LOG, "a"); |
| 4444 | 3364 if (log_fd != NULL) |
| 3365 { | |
| 3366 fprintf(log_fd, "**********************************\n"); | |
| 3367 nfa_set_code(start->c); | |
| 3368 fprintf(log_fd, " RUNNING nfa_regmatch() starting with state %d, code %s\n", | |
| 3369 abs(start->id), code); | |
| 3370 fprintf(log_fd, "**********************************\n"); | |
| 3371 } | |
| 3372 else | |
| 3373 { | |
| 3374 EMSG(_("Could not open temporary log file for writing, displaying on stderr ... ")); | |
| 3375 log_fd = stderr; | |
| 3376 } | |
| 3377 #endif | |
| 3378 | |
| 3379 thislist = &list[0]; | |
| 3380 thislist->n = 0; | |
| 3381 nextlist = &list[1]; | |
| 3382 nextlist->n = 0; | |
| 3383 neglist = &list[2]; | |
| 3384 neglist->n = 0; | |
| 3385 #ifdef ENABLE_LOG | |
| 3386 fprintf(log_fd, "(---) STARTSTATE\n"); | |
| 3387 #endif | |
|
4571
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3388 thislist->id = listid; |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3389 addstate(thislist, start, m, 0); |
| 4444 | 3390 |
| 3391 /* There are two cases when the NFA advances: 1. input char matches the | |
| 3392 * NFA node and 2. input char does not match the NFA node, but the next | |
| 3393 * node is NFA_NOT. The following macro calls addstate() according to | |
| 3394 * these rules. It is used A LOT, so use the "listtbl" table for speed */ | |
| 3395 listtbl[0][0] = NULL; | |
| 3396 listtbl[0][1] = neglist; | |
| 3397 listtbl[1][0] = nextlist; | |
| 3398 listtbl[1][1] = NULL; | |
| 3399 #define ADD_POS_NEG_STATE(node) \ | |
| 3400 ll = listtbl[result ? 1 : 0][node->negated]; \ | |
| 3401 if (ll != NULL) \ | |
|
4571
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3402 addstate(ll, node->out , &t->sub, clen); |
| 4444 | 3403 |
| 3404 | |
| 3405 /* | |
| 3406 * Run for each character. | |
| 3407 */ | |
|
4515
90e9917d4114
updated for version 7.3.1005
Bram Moolenaar <bram@vim.org>
parents:
4507
diff
changeset
|
3408 for (;;) |
|
90e9917d4114
updated for version 7.3.1005
Bram Moolenaar <bram@vim.org>
parents:
4507
diff
changeset
|
3409 { |
|
4549
849180347ac3
updated for version 7.3.1022
Bram Moolenaar <bram@vim.org>
parents:
4547
diff
changeset
|
3410 int curc; |
|
849180347ac3
updated for version 7.3.1022
Bram Moolenaar <bram@vim.org>
parents:
4547
diff
changeset
|
3411 int clen; |
|
849180347ac3
updated for version 7.3.1022
Bram Moolenaar <bram@vim.org>
parents:
4547
diff
changeset
|
3412 |
| 4444 | 3413 #ifdef FEAT_MBYTE |
| 3414 if (has_mbyte) | |
| 3415 { | |
|
4549
849180347ac3
updated for version 7.3.1022
Bram Moolenaar <bram@vim.org>
parents:
4547
diff
changeset
|
3416 curc = (*mb_ptr2char)(reginput); |
|
849180347ac3
updated for version 7.3.1022
Bram Moolenaar <bram@vim.org>
parents:
4547
diff
changeset
|
3417 clen = (*mb_ptr2len)(reginput); |
| 4444 | 3418 } |
| 3419 else | |
| 3420 #endif | |
| 3421 { | |
|
4549
849180347ac3
updated for version 7.3.1022
Bram Moolenaar <bram@vim.org>
parents:
4547
diff
changeset
|
3422 curc = *reginput; |
|
849180347ac3
updated for version 7.3.1022
Bram Moolenaar <bram@vim.org>
parents:
4547
diff
changeset
|
3423 clen = 1; |
| 4444 | 3424 } |
|
4549
849180347ac3
updated for version 7.3.1022
Bram Moolenaar <bram@vim.org>
parents:
4547
diff
changeset
|
3425 if (curc == NUL) |
|
4515
90e9917d4114
updated for version 7.3.1005
Bram Moolenaar <bram@vim.org>
parents:
4507
diff
changeset
|
3426 { |
|
4549
849180347ac3
updated for version 7.3.1022
Bram Moolenaar <bram@vim.org>
parents:
4547
diff
changeset
|
3427 clen = 0; |
|
4515
90e9917d4114
updated for version 7.3.1005
Bram Moolenaar <bram@vim.org>
parents:
4507
diff
changeset
|
3428 go_to_nextline = FALSE; |
|
90e9917d4114
updated for version 7.3.1005
Bram Moolenaar <bram@vim.org>
parents:
4507
diff
changeset
|
3429 } |
| 4444 | 3430 |
| 3431 /* swap lists */ | |
| 3432 thislist = &list[flag]; | |
| 3433 nextlist = &list[flag ^= 1]; | |
|
4571
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3434 nextlist->n = 0; /* clear nextlist */ |
| 4444 | 3435 listtbl[1][0] = nextlist; |
| 3436 ++listid; | |
|
4571
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3437 thislist->id = listid; |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3438 nextlist->id = listid + 1; |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3439 neglist->id = listid + 1; |
| 4444 | 3440 |
| 3441 #ifdef ENABLE_LOG | |
| 3442 fprintf(log_fd, "------------------------------------------\n"); | |
| 3443 fprintf(log_fd, ">>> Reginput is \"%s\"\n", reginput); | |
|
4549
849180347ac3
updated for version 7.3.1022
Bram Moolenaar <bram@vim.org>
parents:
4547
diff
changeset
|
3444 fprintf(log_fd, ">>> Advanced one character ... Current char is %c (code %d) \n", curc, (int)curc); |
| 4444 | 3445 fprintf(log_fd, ">>> Thislist has %d states available: ", thislist->n); |
|
4549
849180347ac3
updated for version 7.3.1022
Bram Moolenaar <bram@vim.org>
parents:
4547
diff
changeset
|
3446 { |
|
849180347ac3
updated for version 7.3.1022
Bram Moolenaar <bram@vim.org>
parents:
4547
diff
changeset
|
3447 int i; |
|
849180347ac3
updated for version 7.3.1022
Bram Moolenaar <bram@vim.org>
parents:
4547
diff
changeset
|
3448 |
|
849180347ac3
updated for version 7.3.1022
Bram Moolenaar <bram@vim.org>
parents:
4547
diff
changeset
|
3449 for (i = 0; i < thislist->n; i++) |
|
849180347ac3
updated for version 7.3.1022
Bram Moolenaar <bram@vim.org>
parents:
4547
diff
changeset
|
3450 fprintf(log_fd, "%d ", abs(thislist->t[i].state->id)); |
|
849180347ac3
updated for version 7.3.1022
Bram Moolenaar <bram@vim.org>
parents:
4547
diff
changeset
|
3451 } |
| 4444 | 3452 fprintf(log_fd, "\n"); |
| 3453 #endif | |
| 3454 | |
| 4460 | 3455 #ifdef NFA_REGEXP_DEBUG_LOG |
| 4444 | 3456 fprintf(debug, "\n-------------------\n"); |
| 3457 #endif | |
| 4480 | 3458 /* |
| 3459 * If the state lists are empty we can stop. | |
| 3460 */ | |
| 3461 if (thislist->n == 0 && neglist->n == 0) | |
| 3462 break; | |
| 4444 | 3463 |
| 3464 /* compute nextlist */ | |
|
4549
849180347ac3
updated for version 7.3.1022
Bram Moolenaar <bram@vim.org>
parents:
4547
diff
changeset
|
3465 for (listidx = 0; listidx < thislist->n || neglist->n > 0; ++listidx) |
| 4444 | 3466 { |
| 3467 if (neglist->n > 0) | |
| 3468 { | |
| 3469 t = &neglist->t[0]; | |
| 4468 | 3470 neglist->n--; |
|
4549
849180347ac3
updated for version 7.3.1022
Bram Moolenaar <bram@vim.org>
parents:
4547
diff
changeset
|
3471 listidx--; |
| 4444 | 3472 } |
| 3473 else | |
|
4549
849180347ac3
updated for version 7.3.1022
Bram Moolenaar <bram@vim.org>
parents:
4547
diff
changeset
|
3474 t = &thislist->t[listidx]; |
| 4444 | 3475 |
| 4460 | 3476 #ifdef NFA_REGEXP_DEBUG_LOG |
| 4444 | 3477 nfa_set_code(t->state->c); |
| 3478 fprintf(debug, "%s, ", code); | |
| 3479 #endif | |
| 3480 #ifdef ENABLE_LOG | |
|
4657
93b7ed814bec
updated for version 7.3.1076
Bram Moolenaar <bram@vim.org>
parents:
4655
diff
changeset
|
3481 { |
|
93b7ed814bec
updated for version 7.3.1076
Bram Moolenaar <bram@vim.org>
parents:
4655
diff
changeset
|
3482 int col; |
|
93b7ed814bec
updated for version 7.3.1076
Bram Moolenaar <bram@vim.org>
parents:
4655
diff
changeset
|
3483 |
|
93b7ed814bec
updated for version 7.3.1076
Bram Moolenaar <bram@vim.org>
parents:
4655
diff
changeset
|
3484 if (t->sub.in_use <= 0) |
|
93b7ed814bec
updated for version 7.3.1076
Bram Moolenaar <bram@vim.org>
parents:
4655
diff
changeset
|
3485 col = -1; |
|
93b7ed814bec
updated for version 7.3.1076
Bram Moolenaar <bram@vim.org>
parents:
4655
diff
changeset
|
3486 else if (REG_MULTI) |
|
93b7ed814bec
updated for version 7.3.1076
Bram Moolenaar <bram@vim.org>
parents:
4655
diff
changeset
|
3487 col = t->sub.list.multi[0].start.col; |
|
93b7ed814bec
updated for version 7.3.1076
Bram Moolenaar <bram@vim.org>
parents:
4655
diff
changeset
|
3488 else |
|
93b7ed814bec
updated for version 7.3.1076
Bram Moolenaar <bram@vim.org>
parents:
4655
diff
changeset
|
3489 col = (int)(t->sub.list.line[0].start - regline); |
|
93b7ed814bec
updated for version 7.3.1076
Bram Moolenaar <bram@vim.org>
parents:
4655
diff
changeset
|
3490 nfa_set_code(t->state->c); |
|
93b7ed814bec
updated for version 7.3.1076
Bram Moolenaar <bram@vim.org>
parents:
4655
diff
changeset
|
3491 fprintf(log_fd, "(%d) char %d %s (start col %d) ... \n", |
|
93b7ed814bec
updated for version 7.3.1076
Bram Moolenaar <bram@vim.org>
parents:
4655
diff
changeset
|
3492 abs(t->state->id), (int)t->state->c, code, col); |
|
93b7ed814bec
updated for version 7.3.1076
Bram Moolenaar <bram@vim.org>
parents:
4655
diff
changeset
|
3493 } |
| 4444 | 3494 #endif |
| 3495 | |
| 3496 /* | |
| 3497 * Handle the possible codes of the current state. | |
| 3498 * The most important is NFA_MATCH. | |
| 3499 */ | |
| 3500 switch (t->state->c) | |
| 3501 { | |
| 3502 case NFA_MATCH: | |
|
4567
96c1a7850097
updated for version 7.3.1031
Bram Moolenaar <bram@vim.org>
parents:
4565
diff
changeset
|
3503 { |
|
96c1a7850097
updated for version 7.3.1031
Bram Moolenaar <bram@vim.org>
parents:
4565
diff
changeset
|
3504 int j; |
|
96c1a7850097
updated for version 7.3.1031
Bram Moolenaar <bram@vim.org>
parents:
4565
diff
changeset
|
3505 |
|
4561
4d81fdda8f35
updated for version 7.3.1028
Bram Moolenaar <bram@vim.org>
parents:
4559
diff
changeset
|
3506 nfa_match = TRUE; |
|
4563
e7016af0cbf9
updated for version 7.3.1029
Bram Moolenaar <bram@vim.org>
parents:
4561
diff
changeset
|
3507 submatch->in_use = t->sub.in_use; |
|
e7016af0cbf9
updated for version 7.3.1029
Bram Moolenaar <bram@vim.org>
parents:
4561
diff
changeset
|
3508 if (REG_MULTI) |
|
e7016af0cbf9
updated for version 7.3.1029
Bram Moolenaar <bram@vim.org>
parents:
4561
diff
changeset
|
3509 for (j = 0; j < submatch->in_use; j++) |
|
e7016af0cbf9
updated for version 7.3.1029
Bram Moolenaar <bram@vim.org>
parents:
4561
diff
changeset
|
3510 { |
|
4577
b22bff1a6af8
updated for version 7.3.1036
Bram Moolenaar <bram@vim.org>
parents:
4573
diff
changeset
|
3511 submatch->list.multi[j].start = |
|
b22bff1a6af8
updated for version 7.3.1036
Bram Moolenaar <bram@vim.org>
parents:
4573
diff
changeset
|
3512 t->sub.list.multi[j].start; |
|
b22bff1a6af8
updated for version 7.3.1036
Bram Moolenaar <bram@vim.org>
parents:
4573
diff
changeset
|
3513 submatch->list.multi[j].end = t->sub.list.multi[j].end; |
|
4563
e7016af0cbf9
updated for version 7.3.1029
Bram Moolenaar <bram@vim.org>
parents:
4561
diff
changeset
|
3514 } |
|
e7016af0cbf9
updated for version 7.3.1029
Bram Moolenaar <bram@vim.org>
parents:
4561
diff
changeset
|
3515 else |
|
e7016af0cbf9
updated for version 7.3.1029
Bram Moolenaar <bram@vim.org>
parents:
4561
diff
changeset
|
3516 for (j = 0; j < submatch->in_use; j++) |
|
e7016af0cbf9
updated for version 7.3.1029
Bram Moolenaar <bram@vim.org>
parents:
4561
diff
changeset
|
3517 { |
|
4577
b22bff1a6af8
updated for version 7.3.1036
Bram Moolenaar <bram@vim.org>
parents:
4573
diff
changeset
|
3518 submatch->list.line[j].start = |
|
b22bff1a6af8
updated for version 7.3.1036
Bram Moolenaar <bram@vim.org>
parents:
4573
diff
changeset
|
3519 t->sub.list.line[j].start; |
|
b22bff1a6af8
updated for version 7.3.1036
Bram Moolenaar <bram@vim.org>
parents:
4573
diff
changeset
|
3520 submatch->list.line[j].end = t->sub.list.line[j].end; |
|
4563
e7016af0cbf9
updated for version 7.3.1029
Bram Moolenaar <bram@vim.org>
parents:
4561
diff
changeset
|
3521 } |
| 4444 | 3522 #ifdef ENABLE_LOG |
|
4571
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3523 log_subexpr(&t->sub); |
| 4444 | 3524 #endif |
|
4515
90e9917d4114
updated for version 7.3.1005
Bram Moolenaar <bram@vim.org>
parents:
4507
diff
changeset
|
3525 /* Found the left-most longest match, do not look at any other |
|
4553
7b835b2969af
updated for version 7.3.1024
Bram Moolenaar <bram@vim.org>
parents:
4551
diff
changeset
|
3526 * states at this position. When the list of states is going |
|
7b835b2969af
updated for version 7.3.1024
Bram Moolenaar <bram@vim.org>
parents:
4551
diff
changeset
|
3527 * to be empty quit without advancing, so that "reginput" is |
|
7b835b2969af
updated for version 7.3.1024
Bram Moolenaar <bram@vim.org>
parents:
4551
diff
changeset
|
3528 * correct. */ |
|
7b835b2969af
updated for version 7.3.1024
Bram Moolenaar <bram@vim.org>
parents:
4551
diff
changeset
|
3529 if (nextlist->n == 0 && neglist->n == 0) |
|
7b835b2969af
updated for version 7.3.1024
Bram Moolenaar <bram@vim.org>
parents:
4551
diff
changeset
|
3530 clen = 0; |
|
4515
90e9917d4114
updated for version 7.3.1005
Bram Moolenaar <bram@vim.org>
parents:
4507
diff
changeset
|
3531 goto nextchar; |
|
4567
96c1a7850097
updated for version 7.3.1031
Bram Moolenaar <bram@vim.org>
parents:
4565
diff
changeset
|
3532 } |
| 4444 | 3533 |
| 3534 case NFA_END_INVISIBLE: | |
| 3535 /* This is only encountered after a NFA_START_INVISIBLE node. | |
| 3536 * They surround a zero-width group, used with "\@=" and "\&". | |
| 3537 * If we got here, it means that the current "invisible" group | |
| 3538 * finished successfully, so return control to the parent | |
| 3539 * nfa_regmatch(). Submatches are stored in *m, and used in | |
| 3540 * the parent call. */ | |
| 3541 if (start->c == NFA_MOPEN + 0) | |
|
4571
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3542 addstate_here(thislist, t->state->out, &t->sub, &listidx); |
| 4444 | 3543 else |
| 3544 { | |
|
4661
0dce3d812e7a
updated for version 7.3.1078
Bram Moolenaar <bram@vim.org>
parents:
4657
diff
changeset
|
3545 /* do not set submatches for \@! */ |
|
0dce3d812e7a
updated for version 7.3.1078
Bram Moolenaar <bram@vim.org>
parents:
4657
diff
changeset
|
3546 if (!t->state->negated) |
|
0dce3d812e7a
updated for version 7.3.1078
Bram Moolenaar <bram@vim.org>
parents:
4657
diff
changeset
|
3547 /* TODO: only copy positions in use. */ |
|
0dce3d812e7a
updated for version 7.3.1078
Bram Moolenaar <bram@vim.org>
parents:
4657
diff
changeset
|
3548 *m = t->sub; |
|
4561
4d81fdda8f35
updated for version 7.3.1028
Bram Moolenaar <bram@vim.org>
parents:
4559
diff
changeset
|
3549 nfa_match = TRUE; |
| 4444 | 3550 } |
| 3551 break; | |
| 3552 | |
| 3553 case NFA_START_INVISIBLE: | |
|
4669
2d15582e132f
updated for version 7.3.1082
Bram Moolenaar <bram@vim.org>
parents:
4667
diff
changeset
|
3554 { |
|
2d15582e132f
updated for version 7.3.1082
Bram Moolenaar <bram@vim.org>
parents:
4667
diff
changeset
|
3555 char_u *save_reginput = reginput; |
|
2d15582e132f
updated for version 7.3.1082
Bram Moolenaar <bram@vim.org>
parents:
4667
diff
changeset
|
3556 char_u *save_regline = regline; |
|
2d15582e132f
updated for version 7.3.1082
Bram Moolenaar <bram@vim.org>
parents:
4667
diff
changeset
|
3557 int save_reglnum = reglnum; |
|
2d15582e132f
updated for version 7.3.1082
Bram Moolenaar <bram@vim.org>
parents:
4667
diff
changeset
|
3558 int save_nfa_match = nfa_match; |
|
2d15582e132f
updated for version 7.3.1082
Bram Moolenaar <bram@vim.org>
parents:
4667
diff
changeset
|
3559 |
|
2d15582e132f
updated for version 7.3.1082
Bram Moolenaar <bram@vim.org>
parents:
4667
diff
changeset
|
3560 /* Call nfa_regmatch() to check if the current concat matches |
|
2d15582e132f
updated for version 7.3.1082
Bram Moolenaar <bram@vim.org>
parents:
4667
diff
changeset
|
3561 * at this position. The concat ends with the node |
|
2d15582e132f
updated for version 7.3.1082
Bram Moolenaar <bram@vim.org>
parents:
4667
diff
changeset
|
3562 * NFA_END_INVISIBLE */ |
| 4444 | 3563 if (listids == NULL) |
| 3564 { | |
|
4669
2d15582e132f
updated for version 7.3.1082
Bram Moolenaar <bram@vim.org>
parents:
4667
diff
changeset
|
3565 listids = (int *)lalloc(sizeof(int) * nstate, TRUE); |
| 4444 | 3566 if (listids == NULL) |
| 3567 { | |
| 3568 EMSG(_("E878: (NFA) Could not allocate memory for branch traversal!")); | |
| 3569 return 0; | |
| 3570 } | |
| 3571 } | |
| 3572 #ifdef ENABLE_LOG | |
| 3573 if (log_fd != stderr) | |
| 3574 fclose(log_fd); | |
| 3575 log_fd = NULL; | |
| 3576 #endif | |
| 3577 /* Have to clear the listid field of the NFA nodes, so that | |
| 3578 * nfa_regmatch() and addstate() can run properly after | |
| 3579 * recursion. */ | |
| 3580 nfa_save_listids(start, listids); | |
| 3581 nfa_set_null_listids(start); | |
| 3582 result = nfa_regmatch(t->state->out, submatch, m); | |
| 3583 nfa_set_neg_listids(start); | |
| 3584 nfa_restore_listids(start, listids); | |
|
4669
2d15582e132f
updated for version 7.3.1082
Bram Moolenaar <bram@vim.org>
parents:
4667
diff
changeset
|
3585 |
|
2d15582e132f
updated for version 7.3.1082
Bram Moolenaar <bram@vim.org>
parents:
4667
diff
changeset
|
3586 /* restore position in input text */ |
|
2d15582e132f
updated for version 7.3.1082
Bram Moolenaar <bram@vim.org>
parents:
4667
diff
changeset
|
3587 reginput = save_reginput; |
|
2d15582e132f
updated for version 7.3.1082
Bram Moolenaar <bram@vim.org>
parents:
4667
diff
changeset
|
3588 regline = save_regline; |
|
2d15582e132f
updated for version 7.3.1082
Bram Moolenaar <bram@vim.org>
parents:
4667
diff
changeset
|
3589 reglnum = save_reglnum; |
|
2d15582e132f
updated for version 7.3.1082
Bram Moolenaar <bram@vim.org>
parents:
4667
diff
changeset
|
3590 nfa_match = save_nfa_match; |
| 4444 | 3591 |
| 3592 #ifdef ENABLE_LOG | |
|
4531
1be43c095aff
updated for version 7.3.1013
Bram Moolenaar <bram@vim.org>
parents:
4529
diff
changeset
|
3593 log_fd = fopen(NFA_REGEXP_RUN_LOG, "a"); |
| 4444 | 3594 if (log_fd != NULL) |
| 3595 { | |
| 3596 fprintf(log_fd, "****************************\n"); | |
| 3597 fprintf(log_fd, "FINISHED RUNNING nfa_regmatch() recursively\n"); | |
| 3598 fprintf(log_fd, "MATCH = %s\n", result == TRUE ? "OK" : "FALSE"); | |
| 3599 fprintf(log_fd, "****************************\n"); | |
| 3600 } | |
| 3601 else | |
| 3602 { | |
| 3603 EMSG(_("Could not open temporary log file for writing, displaying on stderr ... ")); | |
| 3604 log_fd = stderr; | |
| 3605 } | |
| 3606 #endif | |
|
4661
0dce3d812e7a
updated for version 7.3.1078
Bram Moolenaar <bram@vim.org>
parents:
4657
diff
changeset
|
3607 /* for \@! it is a match when result is FALSE */ |
|
0dce3d812e7a
updated for version 7.3.1078
Bram Moolenaar <bram@vim.org>
parents:
4657
diff
changeset
|
3608 if (result != t->state->negated) |
| 4444 | 3609 { |
|
4567
96c1a7850097
updated for version 7.3.1031
Bram Moolenaar <bram@vim.org>
parents:
4565
diff
changeset
|
3610 int j; |
|
96c1a7850097
updated for version 7.3.1031
Bram Moolenaar <bram@vim.org>
parents:
4565
diff
changeset
|
3611 |
| 4444 | 3612 /* Copy submatch info from the recursive call */ |
| 3613 if (REG_MULTI) | |
|
4563
e7016af0cbf9
updated for version 7.3.1029
Bram Moolenaar <bram@vim.org>
parents:
4561
diff
changeset
|
3614 for (j = 1; j < m->in_use; j++) |
| 4444 | 3615 { |
|
4577
b22bff1a6af8
updated for version 7.3.1036
Bram Moolenaar <bram@vim.org>
parents:
4573
diff
changeset
|
3616 t->sub.list.multi[j].start = m->list.multi[j].start; |
|
b22bff1a6af8
updated for version 7.3.1036
Bram Moolenaar <bram@vim.org>
parents:
4573
diff
changeset
|
3617 t->sub.list.multi[j].end = m->list.multi[j].end; |
| 4444 | 3618 } |
| 3619 else | |
|
4563
e7016af0cbf9
updated for version 7.3.1029
Bram Moolenaar <bram@vim.org>
parents:
4561
diff
changeset
|
3620 for (j = 1; j < m->in_use; j++) |
| 4444 | 3621 { |
|
4577
b22bff1a6af8
updated for version 7.3.1036
Bram Moolenaar <bram@vim.org>
parents:
4573
diff
changeset
|
3622 t->sub.list.line[j].start = m->list.line[j].start; |
|
b22bff1a6af8
updated for version 7.3.1036
Bram Moolenaar <bram@vim.org>
parents:
4573
diff
changeset
|
3623 t->sub.list.line[j].end = m->list.line[j].end; |
| 4444 | 3624 } |
|
4657
93b7ed814bec
updated for version 7.3.1076
Bram Moolenaar <bram@vim.org>
parents:
4655
diff
changeset
|
3625 if (m->in_use > t->sub.in_use) |
|
93b7ed814bec
updated for version 7.3.1076
Bram Moolenaar <bram@vim.org>
parents:
4655
diff
changeset
|
3626 t->sub.in_use = m->in_use; |
|
93b7ed814bec
updated for version 7.3.1076
Bram Moolenaar <bram@vim.org>
parents:
4655
diff
changeset
|
3627 |
|
93b7ed814bec
updated for version 7.3.1076
Bram Moolenaar <bram@vim.org>
parents:
4655
diff
changeset
|
3628 /* t->state->out1 is the corresponding END_INVISIBLE node; |
|
93b7ed814bec
updated for version 7.3.1076
Bram Moolenaar <bram@vim.org>
parents:
4655
diff
changeset
|
3629 * Add it to the current list (zero-width match). */ |
|
4539
532c2e850256
updated for version 7.3.1017
Bram Moolenaar <bram@vim.org>
parents:
4537
diff
changeset
|
3630 addstate_here(thislist, t->state->out1->out, &t->sub, |
|
4571
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3631 &listidx); |
| 4444 | 3632 } |
| 3633 break; | |
|
4669
2d15582e132f
updated for version 7.3.1082
Bram Moolenaar <bram@vim.org>
parents:
4667
diff
changeset
|
3634 } |
| 4444 | 3635 |
| 3636 case NFA_BOL: | |
| 3637 if (reginput == regline) | |
|
4571
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3638 addstate_here(thislist, t->state->out, &t->sub, &listidx); |
| 4444 | 3639 break; |
| 3640 | |
| 3641 case NFA_EOL: | |
|
4549
849180347ac3
updated for version 7.3.1022
Bram Moolenaar <bram@vim.org>
parents:
4547
diff
changeset
|
3642 if (curc == NUL) |
|
4571
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3643 addstate_here(thislist, t->state->out, &t->sub, &listidx); |
| 4444 | 3644 break; |
| 3645 | |
| 3646 case NFA_BOW: | |
| 3647 { | |
| 3648 int bow = TRUE; | |
| 3649 | |
|
4549
849180347ac3
updated for version 7.3.1022
Bram Moolenaar <bram@vim.org>
parents:
4547
diff
changeset
|
3650 if (curc == NUL) |
| 4444 | 3651 bow = FALSE; |
| 3652 #ifdef FEAT_MBYTE | |
| 3653 else if (has_mbyte) | |
| 3654 { | |
| 3655 int this_class; | |
| 3656 | |
| 3657 /* Get class of current and previous char (if it exists). */ | |
| 4503 | 3658 this_class = mb_get_class_buf(reginput, reg_buf); |
| 4444 | 3659 if (this_class <= 1) |
| 3660 bow = FALSE; | |
| 3661 else if (reg_prev_class() == this_class) | |
| 3662 bow = FALSE; | |
| 3663 } | |
| 3664 #endif | |
|
4549
849180347ac3
updated for version 7.3.1022
Bram Moolenaar <bram@vim.org>
parents:
4547
diff
changeset
|
3665 else if (!vim_iswordc_buf(curc, reg_buf) |
| 4503 | 3666 || (reginput > regline |
| 3667 && vim_iswordc_buf(reginput[-1], reg_buf))) | |
| 4444 | 3668 bow = FALSE; |
| 3669 if (bow) | |
|
4571
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3670 addstate_here(thislist, t->state->out, &t->sub, &listidx); |
| 4444 | 3671 break; |
| 3672 } | |
| 3673 | |
| 3674 case NFA_EOW: | |
| 3675 { | |
| 3676 int eow = TRUE; | |
| 3677 | |
| 3678 if (reginput == regline) | |
| 3679 eow = FALSE; | |
| 3680 #ifdef FEAT_MBYTE | |
| 3681 else if (has_mbyte) | |
| 3682 { | |
| 3683 int this_class, prev_class; | |
| 3684 | |
| 3685 /* Get class of current and previous char (if it exists). */ | |
| 4503 | 3686 this_class = mb_get_class_buf(reginput, reg_buf); |
| 4444 | 3687 prev_class = reg_prev_class(); |
| 3688 if (this_class == prev_class | |
| 3689 || prev_class == 0 || prev_class == 1) | |
| 3690 eow = FALSE; | |
| 3691 } | |
| 3692 #endif | |
| 4503 | 3693 else if (!vim_iswordc_buf(reginput[-1], reg_buf) |
|
4549
849180347ac3
updated for version 7.3.1022
Bram Moolenaar <bram@vim.org>
parents:
4547
diff
changeset
|
3694 || (reginput[0] != NUL |
|
849180347ac3
updated for version 7.3.1022
Bram Moolenaar <bram@vim.org>
parents:
4547
diff
changeset
|
3695 && vim_iswordc_buf(curc, reg_buf))) |
| 4444 | 3696 eow = FALSE; |
| 3697 if (eow) | |
|
4571
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3698 addstate_here(thislist, t->state->out, &t->sub, &listidx); |
| 4444 | 3699 break; |
| 3700 } | |
| 3701 | |
|
4671
b3c59716e700
updated for version 7.3.1083
Bram Moolenaar <bram@vim.org>
parents:
4669
diff
changeset
|
3702 case NFA_BOF: |
|
b3c59716e700
updated for version 7.3.1083
Bram Moolenaar <bram@vim.org>
parents:
4669
diff
changeset
|
3703 if (reglnum == 0 && reginput == regline |
|
b3c59716e700
updated for version 7.3.1083
Bram Moolenaar <bram@vim.org>
parents:
4669
diff
changeset
|
3704 && (!REG_MULTI || reg_firstlnum == 1)) |
|
b3c59716e700
updated for version 7.3.1083
Bram Moolenaar <bram@vim.org>
parents:
4669
diff
changeset
|
3705 addstate_here(thislist, t->state->out, &t->sub, &listidx); |
|
b3c59716e700
updated for version 7.3.1083
Bram Moolenaar <bram@vim.org>
parents:
4669
diff
changeset
|
3706 break; |
|
b3c59716e700
updated for version 7.3.1083
Bram Moolenaar <bram@vim.org>
parents:
4669
diff
changeset
|
3707 |
|
b3c59716e700
updated for version 7.3.1083
Bram Moolenaar <bram@vim.org>
parents:
4669
diff
changeset
|
3708 case NFA_EOF: |
|
b3c59716e700
updated for version 7.3.1083
Bram Moolenaar <bram@vim.org>
parents:
4669
diff
changeset
|
3709 if (reglnum == reg_maxline && curc == NUL) |
|
b3c59716e700
updated for version 7.3.1083
Bram Moolenaar <bram@vim.org>
parents:
4669
diff
changeset
|
3710 addstate_here(thislist, t->state->out, &t->sub, &listidx); |
|
b3c59716e700
updated for version 7.3.1083
Bram Moolenaar <bram@vim.org>
parents:
4669
diff
changeset
|
3711 break; |
|
b3c59716e700
updated for version 7.3.1083
Bram Moolenaar <bram@vim.org>
parents:
4669
diff
changeset
|
3712 |
|
4527
55bcaa1d2749
updated for version 7.3.1011
Bram Moolenaar <bram@vim.org>
parents:
4525
diff
changeset
|
3713 #ifdef FEAT_MBYTE |
| 4444 | 3714 case NFA_COMPOSING: |
|
4527
55bcaa1d2749
updated for version 7.3.1011
Bram Moolenaar <bram@vim.org>
parents:
4525
diff
changeset
|
3715 { |
|
4549
849180347ac3
updated for version 7.3.1022
Bram Moolenaar <bram@vim.org>
parents:
4547
diff
changeset
|
3716 int mc = curc; |
|
4531
1be43c095aff
updated for version 7.3.1013
Bram Moolenaar <bram@vim.org>
parents:
4529
diff
changeset
|
3717 int len = 0; |
|
1be43c095aff
updated for version 7.3.1013
Bram Moolenaar <bram@vim.org>
parents:
4529
diff
changeset
|
3718 nfa_state_T *end; |
|
1be43c095aff
updated for version 7.3.1013
Bram Moolenaar <bram@vim.org>
parents:
4529
diff
changeset
|
3719 nfa_state_T *sta; |
|
4547
fc997f05cbc7
updated for version 7.3.1021
Bram Moolenaar <bram@vim.org>
parents:
4543
diff
changeset
|
3720 int cchars[MAX_MCO]; |
|
fc997f05cbc7
updated for version 7.3.1021
Bram Moolenaar <bram@vim.org>
parents:
4543
diff
changeset
|
3721 int ccount = 0; |
|
fc997f05cbc7
updated for version 7.3.1021
Bram Moolenaar <bram@vim.org>
parents:
4543
diff
changeset
|
3722 int j; |
|
fc997f05cbc7
updated for version 7.3.1021
Bram Moolenaar <bram@vim.org>
parents:
4543
diff
changeset
|
3723 |
| 4444 | 3724 sta = t->state->out; |
|
4527
55bcaa1d2749
updated for version 7.3.1011
Bram Moolenaar <bram@vim.org>
parents:
4525
diff
changeset
|
3725 len = 0; |
|
4535
45f97c349537
updated for version 7.3.1015
Bram Moolenaar <bram@vim.org>
parents:
4533
diff
changeset
|
3726 if (utf_iscomposing(sta->c)) |
|
45f97c349537
updated for version 7.3.1015
Bram Moolenaar <bram@vim.org>
parents:
4533
diff
changeset
|
3727 { |
|
45f97c349537
updated for version 7.3.1015
Bram Moolenaar <bram@vim.org>
parents:
4533
diff
changeset
|
3728 /* Only match composing character(s), ignore base |
|
45f97c349537
updated for version 7.3.1015
Bram Moolenaar <bram@vim.org>
parents:
4533
diff
changeset
|
3729 * character. Used for ".{composing}" and "{composing}" |
|
45f97c349537
updated for version 7.3.1015
Bram Moolenaar <bram@vim.org>
parents:
4533
diff
changeset
|
3730 * (no preceding character). */ |
|
4549
849180347ac3
updated for version 7.3.1022
Bram Moolenaar <bram@vim.org>
parents:
4547
diff
changeset
|
3731 len += mb_char2len(mc); |
|
4535
45f97c349537
updated for version 7.3.1015
Bram Moolenaar <bram@vim.org>
parents:
4533
diff
changeset
|
3732 } |
|
4551
f0c37f5cf4ea
updated for version 7.3.1023
Bram Moolenaar <bram@vim.org>
parents:
4549
diff
changeset
|
3733 if (ireg_icombine && len == 0) |
| 4444 | 3734 { |
|
4535
45f97c349537
updated for version 7.3.1015
Bram Moolenaar <bram@vim.org>
parents:
4533
diff
changeset
|
3735 /* If \Z was present, then ignore composing characters. |
|
45f97c349537
updated for version 7.3.1015
Bram Moolenaar <bram@vim.org>
parents:
4533
diff
changeset
|
3736 * When ignoring the base character this always matches. */ |
|
4529
432a6b8c7d93
updated for version 7.3.1012
Bram Moolenaar <bram@vim.org>
parents:
4527
diff
changeset
|
3737 /* TODO: How about negated? */ |
|
4549
849180347ac3
updated for version 7.3.1022
Bram Moolenaar <bram@vim.org>
parents:
4547
diff
changeset
|
3738 if (len == 0 && sta->c != curc) |
|
4529
432a6b8c7d93
updated for version 7.3.1012
Bram Moolenaar <bram@vim.org>
parents:
4527
diff
changeset
|
3739 result = FAIL; |
|
4547
fc997f05cbc7
updated for version 7.3.1021
Bram Moolenaar <bram@vim.org>
parents:
4543
diff
changeset
|
3740 else |
|
fc997f05cbc7
updated for version 7.3.1021
Bram Moolenaar <bram@vim.org>
parents:
4543
diff
changeset
|
3741 result = OK; |
|
4529
432a6b8c7d93
updated for version 7.3.1012
Bram Moolenaar <bram@vim.org>
parents:
4527
diff
changeset
|
3742 while (sta->c != NFA_END_COMPOSING) |
|
432a6b8c7d93
updated for version 7.3.1012
Bram Moolenaar <bram@vim.org>
parents:
4527
diff
changeset
|
3743 sta = sta->out; |
| 4444 | 3744 } |
|
4547
fc997f05cbc7
updated for version 7.3.1021
Bram Moolenaar <bram@vim.org>
parents:
4543
diff
changeset
|
3745 |
|
fc997f05cbc7
updated for version 7.3.1021
Bram Moolenaar <bram@vim.org>
parents:
4543
diff
changeset
|
3746 /* Check base character matches first, unless ignored. */ |
|
fc997f05cbc7
updated for version 7.3.1021
Bram Moolenaar <bram@vim.org>
parents:
4543
diff
changeset
|
3747 else if (len > 0 || mc == sta->c) |
|
fc997f05cbc7
updated for version 7.3.1021
Bram Moolenaar <bram@vim.org>
parents:
4543
diff
changeset
|
3748 { |
|
fc997f05cbc7
updated for version 7.3.1021
Bram Moolenaar <bram@vim.org>
parents:
4543
diff
changeset
|
3749 if (len == 0) |
|
4529
432a6b8c7d93
updated for version 7.3.1012
Bram Moolenaar <bram@vim.org>
parents:
4527
diff
changeset
|
3750 { |
|
432a6b8c7d93
updated for version 7.3.1012
Bram Moolenaar <bram@vim.org>
parents:
4527
diff
changeset
|
3751 len += mb_char2len(mc); |
|
432a6b8c7d93
updated for version 7.3.1012
Bram Moolenaar <bram@vim.org>
parents:
4527
diff
changeset
|
3752 sta = sta->out; |
|
432a6b8c7d93
updated for version 7.3.1012
Bram Moolenaar <bram@vim.org>
parents:
4527
diff
changeset
|
3753 } |
| 4444 | 3754 |
|
4547
fc997f05cbc7
updated for version 7.3.1021
Bram Moolenaar <bram@vim.org>
parents:
4543
diff
changeset
|
3755 /* We don't care about the order of composing characters. |
|
fc997f05cbc7
updated for version 7.3.1021
Bram Moolenaar <bram@vim.org>
parents:
4543
diff
changeset
|
3756 * Get them into cchars[] first. */ |
|
4549
849180347ac3
updated for version 7.3.1022
Bram Moolenaar <bram@vim.org>
parents:
4547
diff
changeset
|
3757 while (len < clen) |
|
4547
fc997f05cbc7
updated for version 7.3.1021
Bram Moolenaar <bram@vim.org>
parents:
4543
diff
changeset
|
3758 { |
|
fc997f05cbc7
updated for version 7.3.1021
Bram Moolenaar <bram@vim.org>
parents:
4543
diff
changeset
|
3759 mc = mb_ptr2char(reginput + len); |
|
fc997f05cbc7
updated for version 7.3.1021
Bram Moolenaar <bram@vim.org>
parents:
4543
diff
changeset
|
3760 cchars[ccount++] = mc; |
|
fc997f05cbc7
updated for version 7.3.1021
Bram Moolenaar <bram@vim.org>
parents:
4543
diff
changeset
|
3761 len += mb_char2len(mc); |
|
fc997f05cbc7
updated for version 7.3.1021
Bram Moolenaar <bram@vim.org>
parents:
4543
diff
changeset
|
3762 if (ccount == MAX_MCO) |
|
fc997f05cbc7
updated for version 7.3.1021
Bram Moolenaar <bram@vim.org>
parents:
4543
diff
changeset
|
3763 break; |
|
fc997f05cbc7
updated for version 7.3.1021
Bram Moolenaar <bram@vim.org>
parents:
4543
diff
changeset
|
3764 } |
|
fc997f05cbc7
updated for version 7.3.1021
Bram Moolenaar <bram@vim.org>
parents:
4543
diff
changeset
|
3765 |
|
fc997f05cbc7
updated for version 7.3.1021
Bram Moolenaar <bram@vim.org>
parents:
4543
diff
changeset
|
3766 /* Check that each composing char in the pattern matches a |
|
fc997f05cbc7
updated for version 7.3.1021
Bram Moolenaar <bram@vim.org>
parents:
4543
diff
changeset
|
3767 * composing char in the text. We do not check if all |
|
fc997f05cbc7
updated for version 7.3.1021
Bram Moolenaar <bram@vim.org>
parents:
4543
diff
changeset
|
3768 * composing chars are matched. */ |
|
fc997f05cbc7
updated for version 7.3.1021
Bram Moolenaar <bram@vim.org>
parents:
4543
diff
changeset
|
3769 result = OK; |
|
fc997f05cbc7
updated for version 7.3.1021
Bram Moolenaar <bram@vim.org>
parents:
4543
diff
changeset
|
3770 while (sta->c != NFA_END_COMPOSING) |
|
fc997f05cbc7
updated for version 7.3.1021
Bram Moolenaar <bram@vim.org>
parents:
4543
diff
changeset
|
3771 { |
|
fc997f05cbc7
updated for version 7.3.1021
Bram Moolenaar <bram@vim.org>
parents:
4543
diff
changeset
|
3772 for (j = 0; j < ccount; ++j) |
|
fc997f05cbc7
updated for version 7.3.1021
Bram Moolenaar <bram@vim.org>
parents:
4543
diff
changeset
|
3773 if (cchars[j] == sta->c) |
|
fc997f05cbc7
updated for version 7.3.1021
Bram Moolenaar <bram@vim.org>
parents:
4543
diff
changeset
|
3774 break; |
|
fc997f05cbc7
updated for version 7.3.1021
Bram Moolenaar <bram@vim.org>
parents:
4543
diff
changeset
|
3775 if (j == ccount) |
|
fc997f05cbc7
updated for version 7.3.1021
Bram Moolenaar <bram@vim.org>
parents:
4543
diff
changeset
|
3776 { |
|
fc997f05cbc7
updated for version 7.3.1021
Bram Moolenaar <bram@vim.org>
parents:
4543
diff
changeset
|
3777 result = FAIL; |
|
fc997f05cbc7
updated for version 7.3.1021
Bram Moolenaar <bram@vim.org>
parents:
4543
diff
changeset
|
3778 break; |
|
fc997f05cbc7
updated for version 7.3.1021
Bram Moolenaar <bram@vim.org>
parents:
4543
diff
changeset
|
3779 } |
|
fc997f05cbc7
updated for version 7.3.1021
Bram Moolenaar <bram@vim.org>
parents:
4543
diff
changeset
|
3780 sta = sta->out; |
|
fc997f05cbc7
updated for version 7.3.1021
Bram Moolenaar <bram@vim.org>
parents:
4543
diff
changeset
|
3781 } |
|
fc997f05cbc7
updated for version 7.3.1021
Bram Moolenaar <bram@vim.org>
parents:
4543
diff
changeset
|
3782 } |
|
fc997f05cbc7
updated for version 7.3.1021
Bram Moolenaar <bram@vim.org>
parents:
4543
diff
changeset
|
3783 else |
|
4525
36ddcf4cecbc
updated for version 7.3.1010
Bram Moolenaar <bram@vim.org>
parents:
4517
diff
changeset
|
3784 result = FAIL; |
|
4547
fc997f05cbc7
updated for version 7.3.1021
Bram Moolenaar <bram@vim.org>
parents:
4543
diff
changeset
|
3785 |
|
4527
55bcaa1d2749
updated for version 7.3.1011
Bram Moolenaar <bram@vim.org>
parents:
4525
diff
changeset
|
3786 end = t->state->out1; /* NFA_END_COMPOSING */ |
| 4444 | 3787 ADD_POS_NEG_STATE(end); |
| 3788 break; | |
|
4527
55bcaa1d2749
updated for version 7.3.1011
Bram Moolenaar <bram@vim.org>
parents:
4525
diff
changeset
|
3789 } |
|
55bcaa1d2749
updated for version 7.3.1011
Bram Moolenaar <bram@vim.org>
parents:
4525
diff
changeset
|
3790 #endif |
| 4444 | 3791 |
| 3792 case NFA_NEWL: | |
|
4555
b2946c06d1b6
updated for version 7.3.1025
Bram Moolenaar <bram@vim.org>
parents:
4553
diff
changeset
|
3793 if (curc == NUL && !reg_line_lbr && REG_MULTI |
|
b2946c06d1b6
updated for version 7.3.1025
Bram Moolenaar <bram@vim.org>
parents:
4553
diff
changeset
|
3794 && reglnum <= reg_maxline) |
| 4444 | 3795 { |
|
4515
90e9917d4114
updated for version 7.3.1005
Bram Moolenaar <bram@vim.org>
parents:
4507
diff
changeset
|
3796 go_to_nextline = TRUE; |
|
90e9917d4114
updated for version 7.3.1005
Bram Moolenaar <bram@vim.org>
parents:
4507
diff
changeset
|
3797 /* Pass -1 for the offset, which means taking the position |
|
90e9917d4114
updated for version 7.3.1005
Bram Moolenaar <bram@vim.org>
parents:
4507
diff
changeset
|
3798 * at the start of the next line. */ |
|
4571
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3799 addstate(nextlist, t->state->out, &t->sub, -1); |
| 4444 | 3800 } |
|
4555
b2946c06d1b6
updated for version 7.3.1025
Bram Moolenaar <bram@vim.org>
parents:
4553
diff
changeset
|
3801 else if (curc == '\n' && reg_line_lbr) |
|
b2946c06d1b6
updated for version 7.3.1025
Bram Moolenaar <bram@vim.org>
parents:
4553
diff
changeset
|
3802 { |
|
b2946c06d1b6
updated for version 7.3.1025
Bram Moolenaar <bram@vim.org>
parents:
4553
diff
changeset
|
3803 /* match \n as if it is an ordinary character */ |
|
4571
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3804 addstate(nextlist, t->state->out, &t->sub, 1); |
|
4555
b2946c06d1b6
updated for version 7.3.1025
Bram Moolenaar <bram@vim.org>
parents:
4553
diff
changeset
|
3805 } |
| 4444 | 3806 break; |
| 3807 | |
| 3808 case NFA_CLASS_ALNUM: | |
| 3809 case NFA_CLASS_ALPHA: | |
| 3810 case NFA_CLASS_BLANK: | |
| 3811 case NFA_CLASS_CNTRL: | |
| 3812 case NFA_CLASS_DIGIT: | |
| 3813 case NFA_CLASS_GRAPH: | |
| 3814 case NFA_CLASS_LOWER: | |
| 3815 case NFA_CLASS_PRINT: | |
| 3816 case NFA_CLASS_PUNCT: | |
| 3817 case NFA_CLASS_SPACE: | |
| 3818 case NFA_CLASS_UPPER: | |
| 3819 case NFA_CLASS_XDIGIT: | |
| 3820 case NFA_CLASS_TAB: | |
| 3821 case NFA_CLASS_RETURN: | |
| 3822 case NFA_CLASS_BACKSPACE: | |
| 3823 case NFA_CLASS_ESCAPE: | |
|
4549
849180347ac3
updated for version 7.3.1022
Bram Moolenaar <bram@vim.org>
parents:
4547
diff
changeset
|
3824 result = check_char_class(t->state->c, curc); |
| 4444 | 3825 ADD_POS_NEG_STATE(t->state); |
| 3826 break; | |
| 3827 | |
| 3828 case NFA_END_NEG_RANGE: | |
| 3829 /* This follows a series of negated nodes, like: | |
| 3830 * CHAR(x), NFA_NOT, CHAR(y), NFA_NOT etc. */ | |
|
4549
849180347ac3
updated for version 7.3.1022
Bram Moolenaar <bram@vim.org>
parents:
4547
diff
changeset
|
3831 if (curc > 0) |
|
4571
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3832 addstate(nextlist, t->state->out, &t->sub, clen); |
| 4444 | 3833 break; |
| 3834 | |
| 3835 case NFA_ANY: | |
|
4515
90e9917d4114
updated for version 7.3.1005
Bram Moolenaar <bram@vim.org>
parents:
4507
diff
changeset
|
3836 /* Any char except '\0', (end of input) does not match. */ |
|
4549
849180347ac3
updated for version 7.3.1022
Bram Moolenaar <bram@vim.org>
parents:
4547
diff
changeset
|
3837 if (curc > 0) |
|
4571
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3838 addstate(nextlist, t->state->out, &t->sub, clen); |
| 4444 | 3839 break; |
| 3840 | |
| 3841 /* | |
| 3842 * Character classes like \a for alpha, \d for digit etc. | |
| 3843 */ | |
| 3844 case NFA_IDENT: /* \i */ | |
|
4549
849180347ac3
updated for version 7.3.1022
Bram Moolenaar <bram@vim.org>
parents:
4547
diff
changeset
|
3845 result = vim_isIDc(curc); |
| 4444 | 3846 ADD_POS_NEG_STATE(t->state); |
| 3847 break; | |
| 3848 | |
| 3849 case NFA_SIDENT: /* \I */ | |
|
4549
849180347ac3
updated for version 7.3.1022
Bram Moolenaar <bram@vim.org>
parents:
4547
diff
changeset
|
3850 result = !VIM_ISDIGIT(curc) && vim_isIDc(curc); |
| 4444 | 3851 ADD_POS_NEG_STATE(t->state); |
| 3852 break; | |
| 3853 | |
| 3854 case NFA_KWORD: /* \k */ | |
| 4503 | 3855 result = vim_iswordp_buf(reginput, reg_buf); |
| 4444 | 3856 ADD_POS_NEG_STATE(t->state); |
| 3857 break; | |
| 3858 | |
| 3859 case NFA_SKWORD: /* \K */ | |
|
4549
849180347ac3
updated for version 7.3.1022
Bram Moolenaar <bram@vim.org>
parents:
4547
diff
changeset
|
3860 result = !VIM_ISDIGIT(curc) |
|
849180347ac3
updated for version 7.3.1022
Bram Moolenaar <bram@vim.org>
parents:
4547
diff
changeset
|
3861 && vim_iswordp_buf(reginput, reg_buf); |
| 4444 | 3862 ADD_POS_NEG_STATE(t->state); |
| 3863 break; | |
| 3864 | |
| 3865 case NFA_FNAME: /* \f */ | |
|
4549
849180347ac3
updated for version 7.3.1022
Bram Moolenaar <bram@vim.org>
parents:
4547
diff
changeset
|
3866 result = vim_isfilec(curc); |
| 4444 | 3867 ADD_POS_NEG_STATE(t->state); |
| 3868 break; | |
| 3869 | |
| 3870 case NFA_SFNAME: /* \F */ | |
|
4549
849180347ac3
updated for version 7.3.1022
Bram Moolenaar <bram@vim.org>
parents:
4547
diff
changeset
|
3871 result = !VIM_ISDIGIT(curc) && vim_isfilec(curc); |
| 4444 | 3872 ADD_POS_NEG_STATE(t->state); |
| 3873 break; | |
| 3874 | |
| 3875 case NFA_PRINT: /* \p */ | |
| 4470 | 3876 result = ptr2cells(reginput) == 1; |
| 4444 | 3877 ADD_POS_NEG_STATE(t->state); |
| 3878 break; | |
| 3879 | |
| 3880 case NFA_SPRINT: /* \P */ | |
|
4549
849180347ac3
updated for version 7.3.1022
Bram Moolenaar <bram@vim.org>
parents:
4547
diff
changeset
|
3881 result = !VIM_ISDIGIT(curc) && ptr2cells(reginput) == 1; |
| 4444 | 3882 ADD_POS_NEG_STATE(t->state); |
| 3883 break; | |
| 3884 | |
| 3885 case NFA_WHITE: /* \s */ | |
|
4549
849180347ac3
updated for version 7.3.1022
Bram Moolenaar <bram@vim.org>
parents:
4547
diff
changeset
|
3886 result = vim_iswhite(curc); |
| 4444 | 3887 ADD_POS_NEG_STATE(t->state); |
| 3888 break; | |
| 3889 | |
| 3890 case NFA_NWHITE: /* \S */ | |
|
4549
849180347ac3
updated for version 7.3.1022
Bram Moolenaar <bram@vim.org>
parents:
4547
diff
changeset
|
3891 result = curc != NUL && !vim_iswhite(curc); |
| 4444 | 3892 ADD_POS_NEG_STATE(t->state); |
| 3893 break; | |
| 3894 | |
| 3895 case NFA_DIGIT: /* \d */ | |
|
4549
849180347ac3
updated for version 7.3.1022
Bram Moolenaar <bram@vim.org>
parents:
4547
diff
changeset
|
3896 result = ri_digit(curc); |
| 4444 | 3897 ADD_POS_NEG_STATE(t->state); |
| 3898 break; | |
| 3899 | |
| 3900 case NFA_NDIGIT: /* \D */ | |
|
4549
849180347ac3
updated for version 7.3.1022
Bram Moolenaar <bram@vim.org>
parents:
4547
diff
changeset
|
3901 result = curc != NUL && !ri_digit(curc); |
| 4444 | 3902 ADD_POS_NEG_STATE(t->state); |
| 3903 break; | |
| 3904 | |
| 3905 case NFA_HEX: /* \x */ | |
|
4549
849180347ac3
updated for version 7.3.1022
Bram Moolenaar <bram@vim.org>
parents:
4547
diff
changeset
|
3906 result = ri_hex(curc); |
| 4444 | 3907 ADD_POS_NEG_STATE(t->state); |
| 3908 break; | |
| 3909 | |
| 3910 case NFA_NHEX: /* \X */ | |
|
4549
849180347ac3
updated for version 7.3.1022
Bram Moolenaar <bram@vim.org>
parents:
4547
diff
changeset
|
3911 result = curc != NUL && !ri_hex(curc); |
| 4444 | 3912 ADD_POS_NEG_STATE(t->state); |
| 3913 break; | |
| 3914 | |
| 3915 case NFA_OCTAL: /* \o */ | |
|
4549
849180347ac3
updated for version 7.3.1022
Bram Moolenaar <bram@vim.org>
parents:
4547
diff
changeset
|
3916 result = ri_octal(curc); |
| 4444 | 3917 ADD_POS_NEG_STATE(t->state); |
| 3918 break; | |
| 3919 | |
| 3920 case NFA_NOCTAL: /* \O */ | |
|
4549
849180347ac3
updated for version 7.3.1022
Bram Moolenaar <bram@vim.org>
parents:
4547
diff
changeset
|
3921 result = curc != NUL && !ri_octal(curc); |
| 4444 | 3922 ADD_POS_NEG_STATE(t->state); |
| 3923 break; | |
| 3924 | |
| 3925 case NFA_WORD: /* \w */ | |
|
4549
849180347ac3
updated for version 7.3.1022
Bram Moolenaar <bram@vim.org>
parents:
4547
diff
changeset
|
3926 result = ri_word(curc); |
| 4444 | 3927 ADD_POS_NEG_STATE(t->state); |
| 3928 break; | |
| 3929 | |
| 3930 case NFA_NWORD: /* \W */ | |
|
4549
849180347ac3
updated for version 7.3.1022
Bram Moolenaar <bram@vim.org>
parents:
4547
diff
changeset
|
3931 result = curc != NUL && !ri_word(curc); |
| 4444 | 3932 ADD_POS_NEG_STATE(t->state); |
| 3933 break; | |
| 3934 | |
| 3935 case NFA_HEAD: /* \h */ | |
|
4549
849180347ac3
updated for version 7.3.1022
Bram Moolenaar <bram@vim.org>
parents:
4547
diff
changeset
|
3936 result = ri_head(curc); |
| 4444 | 3937 ADD_POS_NEG_STATE(t->state); |
| 3938 break; | |
| 3939 | |
| 3940 case NFA_NHEAD: /* \H */ | |
|
4549
849180347ac3
updated for version 7.3.1022
Bram Moolenaar <bram@vim.org>
parents:
4547
diff
changeset
|
3941 result = curc != NUL && !ri_head(curc); |
| 4444 | 3942 ADD_POS_NEG_STATE(t->state); |
| 3943 break; | |
| 3944 | |
| 3945 case NFA_ALPHA: /* \a */ | |
|
4549
849180347ac3
updated for version 7.3.1022
Bram Moolenaar <bram@vim.org>
parents:
4547
diff
changeset
|
3946 result = ri_alpha(curc); |
| 4444 | 3947 ADD_POS_NEG_STATE(t->state); |
| 3948 break; | |
| 3949 | |
| 3950 case NFA_NALPHA: /* \A */ | |
|
4549
849180347ac3
updated for version 7.3.1022
Bram Moolenaar <bram@vim.org>
parents:
4547
diff
changeset
|
3951 result = curc != NUL && !ri_alpha(curc); |
| 4444 | 3952 ADD_POS_NEG_STATE(t->state); |
| 3953 break; | |
| 3954 | |
| 3955 case NFA_LOWER: /* \l */ | |
|
4549
849180347ac3
updated for version 7.3.1022
Bram Moolenaar <bram@vim.org>
parents:
4547
diff
changeset
|
3956 result = ri_lower(curc); |
| 4444 | 3957 ADD_POS_NEG_STATE(t->state); |
| 3958 break; | |
| 3959 | |
| 3960 case NFA_NLOWER: /* \L */ | |
|
4549
849180347ac3
updated for version 7.3.1022
Bram Moolenaar <bram@vim.org>
parents:
4547
diff
changeset
|
3961 result = curc != NUL && !ri_lower(curc); |
| 4444 | 3962 ADD_POS_NEG_STATE(t->state); |
| 3963 break; | |
| 3964 | |
| 3965 case NFA_UPPER: /* \u */ | |
|
4549
849180347ac3
updated for version 7.3.1022
Bram Moolenaar <bram@vim.org>
parents:
4547
diff
changeset
|
3966 result = ri_upper(curc); |
| 4444 | 3967 ADD_POS_NEG_STATE(t->state); |
| 3968 break; | |
| 3969 | |
| 3970 case NFA_NUPPER: /* \U */ | |
|
4549
849180347ac3
updated for version 7.3.1022
Bram Moolenaar <bram@vim.org>
parents:
4547
diff
changeset
|
3971 result = curc != NUL && !ri_upper(curc); |
| 4444 | 3972 ADD_POS_NEG_STATE(t->state); |
| 3973 break; | |
| 3974 | |
|
4571
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3975 case NFA_BACKREF1: |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3976 case NFA_BACKREF2: |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3977 case NFA_BACKREF3: |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3978 case NFA_BACKREF4: |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3979 case NFA_BACKREF5: |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3980 case NFA_BACKREF6: |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3981 case NFA_BACKREF7: |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3982 case NFA_BACKREF8: |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3983 case NFA_BACKREF9: |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3984 /* \1 .. \9 */ |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3985 { |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3986 int subidx = t->state->c - NFA_BACKREF1 + 1; |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3987 int bytelen; |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3988 |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3989 result = match_backref(&t->sub, subidx, &bytelen); |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3990 if (result) |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3991 { |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3992 if (bytelen == 0) |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3993 { |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3994 /* empty match always works, add NFA_SKIP with zero to |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3995 * be used next */ |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3996 addstate_here(thislist, t->state->out, &t->sub, |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3997 &listidx); |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3998 thislist->t[listidx + 1].count = 0; |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
3999 } |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
4000 else if (bytelen <= clen) |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
4001 { |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
4002 /* match current character, jump ahead to out of |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
4003 * NFA_SKIP */ |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
4004 addstate(nextlist, t->state->out->out, &t->sub, clen); |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
4005 #ifdef ENABLE_LOG |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
4006 log_subexpr(&nextlist->t[nextlist->n - 1].sub); |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
4007 #endif |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
4008 } |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
4009 else |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
4010 { |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
4011 /* skip ofer the matched characters, set character |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
4012 * count in NFA_SKIP */ |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
4013 addstate(nextlist, t->state->out, &t->sub, bytelen); |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
4014 nextlist->t[nextlist->n - 1].count = bytelen - clen; |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
4015 #ifdef ENABLE_LOG |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
4016 log_subexpr(&nextlist->t[nextlist->n - 1].sub); |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
4017 #endif |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
4018 } |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
4019 |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
4020 } |
| 4482 | 4021 break; |
|
4571
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
4022 } |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
4023 case NFA_SKIP: |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
4024 /* charater of previous matching \1 .. \9 */ |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
4025 if (t->count - clen <= 0) |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
4026 { |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
4027 /* end of match, go to what follows */ |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
4028 addstate(nextlist, t->state->out, &t->sub, clen); |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
4029 #ifdef ENABLE_LOG |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
4030 log_subexpr(&nextlist->t[nextlist->n - 1].sub); |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
4031 #endif |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
4032 } |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
4033 else |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
4034 { |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
4035 /* add state again with decremented count */ |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
4036 addstate(nextlist, t->state, &t->sub, 0); |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
4037 nextlist->t[nextlist->n - 1].count = t->count - clen; |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
4038 #ifdef ENABLE_LOG |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
4039 log_subexpr(&nextlist->t[nextlist->n - 1].sub); |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
4040 #endif |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
4041 } |
|
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
4042 break; |
| 4482 | 4043 |
| 4044 case NFA_SKIP_CHAR: | |
| 4045 case NFA_ZSTART: | |
|
4569
f262fb02889d
updated for version 7.3.1032
Bram Moolenaar <bram@vim.org>
parents:
4567
diff
changeset
|
4046 case NFA_ZEND: |
| 4482 | 4047 /* TODO: should not happen? */ |
| 4048 break; | |
| 4049 | |
|
4583
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
4050 case NFA_LNUM: |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
4051 case NFA_LNUM_GT: |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
4052 case NFA_LNUM_LT: |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
4053 result = (REG_MULTI && |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
4054 nfa_re_num_cmp(t->state->val, t->state->c - NFA_LNUM, |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
4055 (long_u)(reglnum + reg_firstlnum))); |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
4056 if (result) |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
4057 addstate_here(thislist, t->state->out, &t->sub, &listidx); |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
4058 break; |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
4059 |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
4060 case NFA_COL: |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
4061 case NFA_COL_GT: |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
4062 case NFA_COL_LT: |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
4063 result = nfa_re_num_cmp(t->state->val, t->state->c - NFA_COL, |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
4064 (long_u)(reginput - regline) + 1); |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
4065 if (result) |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
4066 addstate_here(thislist, t->state->out, &t->sub, &listidx); |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
4067 break; |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
4068 |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
4069 case NFA_VCOL: |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
4070 case NFA_VCOL_GT: |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
4071 case NFA_VCOL_LT: |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
4072 result = nfa_re_num_cmp(t->state->val, t->state->c - NFA_VCOL, |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
4073 (long_u)win_linetabsize( |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
4074 reg_win == NULL ? curwin : reg_win, |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
4075 regline, (colnr_T)(reginput - regline)) + 1); |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
4076 if (result) |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
4077 addstate_here(thislist, t->state->out, &t->sub, &listidx); |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
4078 break; |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
4079 |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
4080 case NFA_CURSOR: |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
4081 result = (reg_win != NULL |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
4082 && (reglnum + reg_firstlnum == reg_win->w_cursor.lnum) |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
4083 && ((colnr_T)(reginput - regline) |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
4084 == reg_win->w_cursor.col)); |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
4085 if (result) |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
4086 addstate_here(thislist, t->state->out, &t->sub, &listidx); |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
4087 break; |
|
321cfbef9431
updated for version 7.3.1039
Bram Moolenaar <bram@vim.org>
parents:
4579
diff
changeset
|
4088 |
| 4444 | 4089 default: /* regular character */ |
|
4559
04086e297563
updated for version 7.3.1027
Bram Moolenaar <bram@vim.org>
parents:
4557
diff
changeset
|
4090 { |
|
04086e297563
updated for version 7.3.1027
Bram Moolenaar <bram@vim.org>
parents:
4557
diff
changeset
|
4091 int c = t->state->c; |
|
04086e297563
updated for version 7.3.1027
Bram Moolenaar <bram@vim.org>
parents:
4557
diff
changeset
|
4092 |
| 4482 | 4093 /* TODO: put this in #ifdef later */ |
|
4559
04086e297563
updated for version 7.3.1027
Bram Moolenaar <bram@vim.org>
parents:
4557
diff
changeset
|
4094 if (c < -256) |
|
04086e297563
updated for version 7.3.1027
Bram Moolenaar <bram@vim.org>
parents:
4557
diff
changeset
|
4095 EMSGN("INTERNAL: Negative state char: %ld", c); |
|
04086e297563
updated for version 7.3.1027
Bram Moolenaar <bram@vim.org>
parents:
4557
diff
changeset
|
4096 if (is_Magic(c)) |
|
04086e297563
updated for version 7.3.1027
Bram Moolenaar <bram@vim.org>
parents:
4557
diff
changeset
|
4097 c = un_Magic(c); |
|
04086e297563
updated for version 7.3.1027
Bram Moolenaar <bram@vim.org>
parents:
4557
diff
changeset
|
4098 result = (c == curc); |
|
04086e297563
updated for version 7.3.1027
Bram Moolenaar <bram@vim.org>
parents:
4557
diff
changeset
|
4099 |
|
04086e297563
updated for version 7.3.1027
Bram Moolenaar <bram@vim.org>
parents:
4557
diff
changeset
|
4100 if (!result && ireg_ic) |
|
04086e297563
updated for version 7.3.1027
Bram Moolenaar <bram@vim.org>
parents:
4557
diff
changeset
|
4101 result = MB_TOLOWER(c) == MB_TOLOWER(curc); |
|
4527
55bcaa1d2749
updated for version 7.3.1011
Bram Moolenaar <bram@vim.org>
parents:
4525
diff
changeset
|
4102 #ifdef FEAT_MBYTE |
|
55bcaa1d2749
updated for version 7.3.1011
Bram Moolenaar <bram@vim.org>
parents:
4525
diff
changeset
|
4103 /* If there is a composing character which is not being |
|
55bcaa1d2749
updated for version 7.3.1011
Bram Moolenaar <bram@vim.org>
parents:
4525
diff
changeset
|
4104 * ignored there can be no match. Match with composing |
|
55bcaa1d2749
updated for version 7.3.1011
Bram Moolenaar <bram@vim.org>
parents:
4525
diff
changeset
|
4105 * character uses NFA_COMPOSING above. */ |
|
55bcaa1d2749
updated for version 7.3.1011
Bram Moolenaar <bram@vim.org>
parents:
4525
diff
changeset
|
4106 if (result && enc_utf8 && !ireg_icombine |
|
4549
849180347ac3
updated for version 7.3.1022
Bram Moolenaar <bram@vim.org>
parents:
4547
diff
changeset
|
4107 && clen != utf_char2len(curc)) |
|
4527
55bcaa1d2749
updated for version 7.3.1011
Bram Moolenaar <bram@vim.org>
parents:
4525
diff
changeset
|
4108 result = FALSE; |
|
55bcaa1d2749
updated for version 7.3.1011
Bram Moolenaar <bram@vim.org>
parents:
4525
diff
changeset
|
4109 #endif |
| 4444 | 4110 ADD_POS_NEG_STATE(t->state); |
| 4111 break; | |
|
4559
04086e297563
updated for version 7.3.1027
Bram Moolenaar <bram@vim.org>
parents:
4557
diff
changeset
|
4112 } |
| 4444 | 4113 } |
| 4114 | |
| 4115 } /* for (thislist = thislist; thislist->state; thislist++) */ | |
| 4116 | |
|
4557
888c12c899e5
updated for version 7.3.1026
Bram Moolenaar <bram@vim.org>
parents:
4555
diff
changeset
|
4117 /* Look for the start of a match in the current position by adding the |
|
888c12c899e5
updated for version 7.3.1026
Bram Moolenaar <bram@vim.org>
parents:
4555
diff
changeset
|
4118 * start state to the list of states. |
|
888c12c899e5
updated for version 7.3.1026
Bram Moolenaar <bram@vim.org>
parents:
4555
diff
changeset
|
4119 * The first found match is the leftmost one, thus the order of states |
|
888c12c899e5
updated for version 7.3.1026
Bram Moolenaar <bram@vim.org>
parents:
4555
diff
changeset
|
4120 * matters! |
|
888c12c899e5
updated for version 7.3.1026
Bram Moolenaar <bram@vim.org>
parents:
4555
diff
changeset
|
4121 * Do not add the start state in recursive calls of nfa_regmatch(), |
|
888c12c899e5
updated for version 7.3.1026
Bram Moolenaar <bram@vim.org>
parents:
4555
diff
changeset
|
4122 * because recursive calls should only start in the first position. |
|
888c12c899e5
updated for version 7.3.1026
Bram Moolenaar <bram@vim.org>
parents:
4555
diff
changeset
|
4123 * Also don't start a match past the first line. */ |
|
4561
4d81fdda8f35
updated for version 7.3.1028
Bram Moolenaar <bram@vim.org>
parents:
4559
diff
changeset
|
4124 if (nfa_match == FALSE && start->c == NFA_MOPEN + 0 |
|
4579
7a2be4a39423
updated for version 7.3.1037
Bram Moolenaar <bram@vim.org>
parents:
4577
diff
changeset
|
4125 && reglnum == 0 && clen != 0 |
|
7a2be4a39423
updated for version 7.3.1037
Bram Moolenaar <bram@vim.org>
parents:
4577
diff
changeset
|
4126 && (ireg_maxcol == 0 |
|
7a2be4a39423
updated for version 7.3.1037
Bram Moolenaar <bram@vim.org>
parents:
4577
diff
changeset
|
4127 || (colnr_T)(reginput - regline) < ireg_maxcol)) |
| 4444 | 4128 { |
| 4129 #ifdef ENABLE_LOG | |
| 4130 fprintf(log_fd, "(---) STARTSTATE\n"); | |
| 4131 #endif | |
|
4571
b2a8e3a66f8c
updated for version 7.3.1033
Bram Moolenaar <bram@vim.org>
parents:
4569
diff
changeset
|
4132 addstate(nextlist, start, m, clen); |
| 4444 | 4133 } |
| 4134 | |
| 4135 #ifdef ENABLE_LOG | |
| 4136 fprintf(log_fd, ">>> Thislist had %d states available: ", thislist->n); | |
|
4549
849180347ac3
updated for version 7.3.1022
Bram Moolenaar <bram@vim.org>
parents:
4547
diff
changeset
|
4137 { |
|
849180347ac3
updated for version 7.3.1022
Bram Moolenaar <bram@vim.org>
parents:
4547
diff
changeset
|
4138 int i; |
|
849180347ac3
updated for version 7.3.1022
Bram Moolenaar <bram@vim.org>
parents:
4547
diff
changeset
|
4139 |
|
849180347ac3
updated for version 7.3.1022
Bram Moolenaar <bram@vim.org>
parents:
4547
diff
changeset
|
4140 for (i = 0; i < thislist->n; i++) |
|
849180347ac3
updated for version 7.3.1022
Bram Moolenaar <bram@vim.org>
parents:
4547
diff
changeset
|
4141 fprintf(log_fd, "%d ", abs(thislist->t[i].state->id)); |
|
849180347ac3
updated for version 7.3.1022
Bram Moolenaar <bram@vim.org>
parents:
4547
diff
changeset
|
4142 } |
| 4444 | 4143 fprintf(log_fd, "\n"); |
| 4144 #endif | |
| 4145 | |
| 4146 nextchar: | |
|
4515
90e9917d4114
updated for version 7.3.1005
Bram Moolenaar <bram@vim.org>
parents:
4507
diff
changeset
|
4147 /* Advance to the next character, or advance to the next line, or |
|
90e9917d4114
updated for version 7.3.1005
Bram Moolenaar <bram@vim.org>
parents:
4507
diff
changeset
|
4148 * finish. */ |
|
4549
849180347ac3
updated for version 7.3.1022
Bram Moolenaar <bram@vim.org>
parents:
4547
diff
changeset
|
4149 if (clen != 0) |
|
849180347ac3
updated for version 7.3.1022
Bram Moolenaar <bram@vim.org>
parents:
4547
diff
changeset
|
4150 reginput += clen; |
|
4515
90e9917d4114
updated for version 7.3.1005
Bram Moolenaar <bram@vim.org>
parents:
4507
diff
changeset
|
4151 else if (go_to_nextline) |
|
90e9917d4114
updated for version 7.3.1005
Bram Moolenaar <bram@vim.org>
parents:
4507
diff
changeset
|
4152 reg_nextline(); |
|
90e9917d4114
updated for version 7.3.1005
Bram Moolenaar <bram@vim.org>
parents:
4507
diff
changeset
|
4153 else |
|
90e9917d4114
updated for version 7.3.1005
Bram Moolenaar <bram@vim.org>
parents:
4507
diff
changeset
|
4154 break; |
|
90e9917d4114
updated for version 7.3.1005
Bram Moolenaar <bram@vim.org>
parents:
4507
diff
changeset
|
4155 } |
| 4444 | 4156 |
| 4157 #ifdef ENABLE_LOG | |
| 4158 if (log_fd != stderr) | |
| 4159 fclose(log_fd); | |
| 4160 log_fd = NULL; | |
| 4161 #endif | |
| 4162 | |
| 4163 theend: | |
| 4164 /* Free memory */ | |
| 4165 vim_free(list[0].t); | |
| 4166 vim_free(list[1].t); | |
| 4167 vim_free(list[2].t); | |
|
4561
4d81fdda8f35
updated for version 7.3.1028
Bram Moolenaar <bram@vim.org>
parents:
4559
diff
changeset
|
4168 vim_free(listids); |
| 4444 | 4169 #undef ADD_POS_NEG_STATE |
| 4460 | 4170 #ifdef NFA_REGEXP_DEBUG_LOG |
| 4444 | 4171 fclose(debug); |
| 4172 #endif | |
| 4173 | |
|
4561
4d81fdda8f35
updated for version 7.3.1028
Bram Moolenaar <bram@vim.org>
parents:
4559
diff
changeset
|
4174 return nfa_match; |
| 4444 | 4175 } |
| 4176 | |
| 4177 /* | |
| 4178 * Try match of "prog" with at regline["col"]. | |
| 4179 * Returns 0 for failure, number of lines contained in the match otherwise. | |
| 4180 */ | |
| 4181 static long | |
| 4182 nfa_regtry(start, col) | |
| 4183 nfa_state_T *start; | |
| 4184 colnr_T col; | |
| 4185 { | |
| 4186 int i; | |
| 4187 regsub_T sub, m; | |
| 4188 #ifdef ENABLE_LOG | |
| 4189 FILE *f; | |
| 4190 #endif | |
| 4191 | |
| 4192 reginput = regline + col; | |
| 4193 need_clear_subexpr = TRUE; | |
| 4194 | |
| 4195 #ifdef ENABLE_LOG | |
|
4531
1be43c095aff
updated for version 7.3.1013
Bram Moolenaar <bram@vim.org>
parents:
4529
diff
changeset
|
4196 f = fopen(NFA_REGEXP_RUN_LOG, "a"); |
| 4444 | 4197 if (f != NULL) |
| 4198 { | |
| 4199 fprintf(f, "\n\n\n\n\n\n\t\t=======================================================\n"); | |
| 4200 fprintf(f, " =======================================================\n"); | |
| 4201 #ifdef DEBUG | |
| 4202 fprintf(f, "\tRegexp is \"%s\"\n", nfa_regengine.expr); | |
| 4203 #endif | |
| 4204 fprintf(f, "\tInput text is \"%s\" \n", reginput); | |
|
4657
93b7ed814bec
updated for version 7.3.1076
Bram Moolenaar <bram@vim.org>
parents:
4655
diff
changeset
|
4205 fprintf(f, " =======================================================\n\n"); |
|
4533
6a2005efa02b
updated for version 7.3.1014
Bram Moolenaar <bram@vim.org>
parents:
4531
diff
changeset
|
4206 nfa_print_state(f, start); |
| 4444 | 4207 fprintf(f, "\n\n"); |
| 4208 fclose(f); | |
| 4209 } | |
| 4210 else | |
| 4211 EMSG(_("Could not open temporary log file for writing ")); | |
| 4212 #endif | |
| 4213 | |
| 4214 if (REG_MULTI) | |
| 4215 { | |
| 4216 /* Use 0xff to set lnum to -1 */ | |
|
4577
b22bff1a6af8
updated for version 7.3.1036
Bram Moolenaar <bram@vim.org>
parents:
4573
diff
changeset
|
4217 vim_memset(sub.list.multi, 0xff, sizeof(struct multipos) * nfa_nsubexpr); |
|
b22bff1a6af8
updated for version 7.3.1036
Bram Moolenaar <bram@vim.org>
parents:
4573
diff
changeset
|
4218 vim_memset(m.list.multi, 0xff, sizeof(struct multipos) * nfa_nsubexpr); |
| 4444 | 4219 } |
| 4220 else | |
| 4221 { | |
|
4577
b22bff1a6af8
updated for version 7.3.1036
Bram Moolenaar <bram@vim.org>
parents:
4573
diff
changeset
|
4222 vim_memset(sub.list.line, 0, sizeof(struct linepos) * nfa_nsubexpr); |
|
b22bff1a6af8
updated for version 7.3.1036
Bram Moolenaar <bram@vim.org>
parents:
4573
diff
changeset
|
4223 vim_memset(m.list.line, 0, sizeof(struct linepos) * nfa_nsubexpr); |
| 4444 | 4224 } |
|
4563
e7016af0cbf9
updated for version 7.3.1029
Bram Moolenaar <bram@vim.org>
parents:
4561
diff
changeset
|
4225 sub.in_use = 0; |
|
e7016af0cbf9
updated for version 7.3.1029
Bram Moolenaar <bram@vim.org>
parents:
4561
diff
changeset
|
4226 m.in_use = 0; |
| 4444 | 4227 |
| 4228 if (nfa_regmatch(start, &sub, &m) == FALSE) | |
| 4229 return 0; | |
| 4230 | |
| 4231 cleanup_subexpr(); | |
| 4232 if (REG_MULTI) | |
| 4233 { | |
|
4563
e7016af0cbf9
updated for version 7.3.1029
Bram Moolenaar <bram@vim.org>
parents:
4561
diff
changeset
|
4234 for (i = 0; i < sub.in_use; i++) |
| 4444 | 4235 { |
|
4577
b22bff1a6af8
updated for version 7.3.1036
Bram Moolenaar <bram@vim.org>
parents:
4573
diff
changeset
|
4236 reg_startpos[i] = sub.list.multi[i].start; |
|
b22bff1a6af8
updated for version 7.3.1036
Bram Moolenaar <bram@vim.org>
parents:
4573
diff
changeset
|
4237 reg_endpos[i] = sub.list.multi[i].end; |
| 4444 | 4238 } |
| 4239 | |
| 4240 if (reg_startpos[0].lnum < 0) | |
| 4241 { | |
| 4242 reg_startpos[0].lnum = 0; | |
| 4243 reg_startpos[0].col = col; | |
| 4244 } | |
| 4245 if (reg_endpos[0].lnum < 0) | |
| 4246 { | |
|
4569
f262fb02889d
updated for version 7.3.1032
Bram Moolenaar <bram@vim.org>
parents:
4567
diff
changeset
|
4247 /* pattern has a \ze but it didn't match, use current end */ |
| 4444 | 4248 reg_endpos[0].lnum = reglnum; |
| 4249 reg_endpos[0].col = (int)(reginput - regline); | |
| 4250 } | |
| 4251 else | |
| 4252 /* Use line number of "\ze". */ | |
| 4253 reglnum = reg_endpos[0].lnum; | |
| 4254 } | |
| 4255 else | |
| 4256 { | |
|
4563
e7016af0cbf9
updated for version 7.3.1029
Bram Moolenaar <bram@vim.org>
parents:
4561
diff
changeset
|
4257 for (i = 0; i < sub.in_use; i++) |
| 4444 | 4258 { |
|
4577
b22bff1a6af8
updated for version 7.3.1036
Bram Moolenaar <bram@vim.org>
parents:
4573
diff
changeset
|
4259 reg_startp[i] = sub.list.line[i].start; |
|
b22bff1a6af8
updated for version 7.3.1036
Bram Moolenaar <bram@vim.org>
parents:
4573
diff
changeset
|
4260 reg_endp[i] = sub.list.line[i].end; |
| 4444 | 4261 } |
| 4262 | |
| 4263 if (reg_startp[0] == NULL) | |
| 4264 reg_startp[0] = regline + col; | |
| 4265 if (reg_endp[0] == NULL) | |
| 4266 reg_endp[0] = reginput; | |
| 4267 } | |
| 4268 | |
| 4269 return 1 + reglnum; | |
| 4270 } | |
| 4271 | |
| 4272 /* | |
| 4273 * Match a regexp against a string ("line" points to the string) or multiple | |
| 4274 * lines ("line" is NULL, use reg_getline()). | |
| 4275 * | |
| 4276 * Returns 0 for failure, number of lines contained in the match otherwise. | |
| 4277 */ | |
| 4278 static long | |
| 4279 nfa_regexec_both(line, col) | |
| 4280 char_u *line; | |
| 4281 colnr_T col; /* column to start looking for match */ | |
| 4282 { | |
| 4283 nfa_regprog_T *prog; | |
| 4284 long retval = 0L; | |
| 4285 int i; | |
| 4286 | |
| 4287 if (REG_MULTI) | |
| 4288 { | |
| 4289 prog = (nfa_regprog_T *)reg_mmatch->regprog; | |
| 4290 line = reg_getline((linenr_T)0); /* relative to the cursor */ | |
| 4291 reg_startpos = reg_mmatch->startpos; | |
| 4292 reg_endpos = reg_mmatch->endpos; | |
| 4293 } | |
| 4294 else | |
| 4295 { | |
| 4296 prog = (nfa_regprog_T *)reg_match->regprog; | |
| 4297 reg_startp = reg_match->startp; | |
| 4298 reg_endp = reg_match->endp; | |
| 4299 } | |
| 4300 | |
| 4301 /* Be paranoid... */ | |
| 4302 if (prog == NULL || line == NULL) | |
| 4303 { | |
| 4304 EMSG(_(e_null)); | |
| 4305 goto theend; | |
| 4306 } | |
| 4307 | |
| 4308 /* If the start column is past the maximum column: no need to try. */ | |
| 4309 if (ireg_maxcol > 0 && col >= ireg_maxcol) | |
| 4310 goto theend; | |
| 4311 | |
| 4312 /* If pattern contains "\c" or "\C": overrule value of ireg_ic */ | |
| 4313 if (prog->regflags & RF_ICASE) | |
| 4314 ireg_ic = TRUE; | |
| 4315 else if (prog->regflags & RF_NOICASE) | |
| 4316 ireg_ic = FALSE; | |
| 4317 | |
| 4318 #ifdef FEAT_MBYTE | |
| 4319 /* If pattern contains "\Z" overrule value of ireg_icombine */ | |
| 4320 if (prog->regflags & RF_ICOMBINE) | |
| 4321 ireg_icombine = TRUE; | |
| 4322 #endif | |
| 4323 | |
| 4324 regline = line; | |
| 4325 reglnum = 0; /* relative to line */ | |
| 4326 | |
|
4553
7b835b2969af
updated for version 7.3.1024
Bram Moolenaar <bram@vim.org>
parents:
4551
diff
changeset
|
4327 nfa_has_zend = prog->has_zend; |
|
4647
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
4328 nfa_has_backref = prog->has_backref; |
|
4561
4d81fdda8f35
updated for version 7.3.1028
Bram Moolenaar <bram@vim.org>
parents:
4559
diff
changeset
|
4329 nfa_nsubexpr = prog->nsubexp; |
|
4553
7b835b2969af
updated for version 7.3.1024
Bram Moolenaar <bram@vim.org>
parents:
4551
diff
changeset
|
4330 |
| 4444 | 4331 nstate = prog->nstate; |
| 4332 for (i = 0; i < nstate; ++i) | |
| 4333 { | |
| 4334 prog->state[i].id = i; | |
| 4335 prog->state[i].lastlist = 0; | |
| 4336 } | |
| 4337 | |
| 4338 retval = nfa_regtry(prog->start, col); | |
| 4339 | |
| 4340 theend: | |
| 4341 return retval; | |
| 4342 } | |
| 4343 | |
| 4344 /* | |
| 4345 * Compile a regular expression into internal code for the NFA matcher. | |
| 4346 * Returns the program in allocated space. Returns NULL for an error. | |
| 4347 */ | |
| 4348 static regprog_T * | |
| 4349 nfa_regcomp(expr, re_flags) | |
| 4350 char_u *expr; | |
| 4351 int re_flags; | |
| 4352 { | |
|
4541
80170d61a85c
updated for version 7.3.1018
Bram Moolenaar <bram@vim.org>
parents:
4539
diff
changeset
|
4353 nfa_regprog_T *prog = NULL; |
| 4458 | 4354 size_t prog_size; |
| 4444 | 4355 int *postfix; |
| 4356 | |
| 4357 if (expr == NULL) | |
| 4358 return NULL; | |
| 4359 | |
| 4360 #ifdef DEBUG | |
| 4361 nfa_regengine.expr = expr; | |
| 4362 #endif | |
| 4363 | |
| 4364 init_class_tab(); | |
| 4365 | |
| 4366 if (nfa_regcomp_start(expr, re_flags) == FAIL) | |
| 4367 return NULL; | |
| 4368 | |
| 4369 /* Build postfix form of the regexp. Needed to build the NFA | |
|
4541
80170d61a85c
updated for version 7.3.1018
Bram Moolenaar <bram@vim.org>
parents:
4539
diff
changeset
|
4370 * (and count its size). */ |
| 4444 | 4371 postfix = re2post(); |
| 4372 if (postfix == NULL) | |
|
4555
b2946c06d1b6
updated for version 7.3.1025
Bram Moolenaar <bram@vim.org>
parents:
4553
diff
changeset
|
4373 { |
|
b2946c06d1b6
updated for version 7.3.1025
Bram Moolenaar <bram@vim.org>
parents:
4553
diff
changeset
|
4374 /* TODO: only give this error for debugging? */ |
|
b2946c06d1b6
updated for version 7.3.1025
Bram Moolenaar <bram@vim.org>
parents:
4553
diff
changeset
|
4375 if (post_ptr >= post_end) |
|
b2946c06d1b6
updated for version 7.3.1025
Bram Moolenaar <bram@vim.org>
parents:
4553
diff
changeset
|
4376 EMSGN("Internal error: estimated max number of states insufficient: %ld", post_end - post_start); |
| 4444 | 4377 goto fail; /* Cascaded (syntax?) error */ |
|
4555
b2946c06d1b6
updated for version 7.3.1025
Bram Moolenaar <bram@vim.org>
parents:
4553
diff
changeset
|
4378 } |
| 4444 | 4379 |
| 4380 /* | |
| 4381 * In order to build the NFA, we parse the input regexp twice: | |
| 4382 * 1. first pass to count size (so we can allocate space) | |
| 4383 * 2. second to emit code | |
| 4384 */ | |
| 4385 #ifdef ENABLE_LOG | |
| 4386 { | |
|
4531
1be43c095aff
updated for version 7.3.1013
Bram Moolenaar <bram@vim.org>
parents:
4529
diff
changeset
|
4387 FILE *f = fopen(NFA_REGEXP_RUN_LOG, "a"); |
| 4444 | 4388 |
| 4389 if (f != NULL) | |
| 4390 { | |
| 4391 fprintf(f, "\n*****************************\n\n\n\n\tCompiling regexp \"%s\" ... hold on !\n", expr); | |
| 4392 fclose(f); | |
| 4393 } | |
| 4394 } | |
| 4395 #endif | |
| 4396 | |
| 4397 /* | |
| 4398 * PASS 1 | |
| 4399 * Count number of NFA states in "nstate". Do not build the NFA. | |
| 4400 */ | |
| 4401 post2nfa(postfix, post_ptr, TRUE); | |
|
4541
80170d61a85c
updated for version 7.3.1018
Bram Moolenaar <bram@vim.org>
parents:
4539
diff
changeset
|
4402 |
|
80170d61a85c
updated for version 7.3.1018
Bram Moolenaar <bram@vim.org>
parents:
4539
diff
changeset
|
4403 /* Space for compiled regexp */ |
|
80170d61a85c
updated for version 7.3.1018
Bram Moolenaar <bram@vim.org>
parents:
4539
diff
changeset
|
4404 prog_size = sizeof(nfa_regprog_T) + sizeof(nfa_state_T) * nstate; |
|
80170d61a85c
updated for version 7.3.1018
Bram Moolenaar <bram@vim.org>
parents:
4539
diff
changeset
|
4405 prog = (nfa_regprog_T *)lalloc(prog_size, TRUE); |
|
80170d61a85c
updated for version 7.3.1018
Bram Moolenaar <bram@vim.org>
parents:
4539
diff
changeset
|
4406 if (prog == NULL) |
|
80170d61a85c
updated for version 7.3.1018
Bram Moolenaar <bram@vim.org>
parents:
4539
diff
changeset
|
4407 goto fail; |
|
80170d61a85c
updated for version 7.3.1018
Bram Moolenaar <bram@vim.org>
parents:
4539
diff
changeset
|
4408 vim_memset(prog, 0, prog_size); |
| 4444 | 4409 state_ptr = prog->state; |
| 4410 | |
| 4411 /* | |
| 4412 * PASS 2 | |
| 4413 * Build the NFA | |
| 4414 */ | |
| 4415 prog->start = post2nfa(postfix, post_ptr, FALSE); | |
| 4416 if (prog->start == NULL) | |
| 4417 goto fail; | |
| 4418 | |
| 4419 prog->regflags = regflags; | |
| 4420 prog->engine = &nfa_regengine; | |
| 4421 prog->nstate = nstate; | |
|
4553
7b835b2969af
updated for version 7.3.1024
Bram Moolenaar <bram@vim.org>
parents:
4551
diff
changeset
|
4422 prog->has_zend = nfa_has_zend; |
|
4647
857f6c53f117
updated for version 7.3.1071
Bram Moolenaar <bram@vim.org>
parents:
4615
diff
changeset
|
4423 prog->has_backref = nfa_has_backref; |
|
4561
4d81fdda8f35
updated for version 7.3.1028
Bram Moolenaar <bram@vim.org>
parents:
4559
diff
changeset
|
4424 prog->nsubexp = regnpar; |
| 4444 | 4425 #ifdef ENABLE_LOG |
| 4426 nfa_postfix_dump(expr, OK); | |
| 4427 nfa_dump(prog); | |
| 4428 #endif | |
| 4429 | |
| 4430 out: | |
| 4431 vim_free(post_start); | |
| 4432 post_start = post_ptr = post_end = NULL; | |
| 4433 state_ptr = NULL; | |
| 4434 return (regprog_T *)prog; | |
| 4435 | |
| 4436 fail: | |
| 4437 vim_free(prog); | |
| 4438 prog = NULL; | |
| 4439 #ifdef ENABLE_LOG | |
| 4440 nfa_postfix_dump(expr, FAIL); | |
| 4441 #endif | |
| 4442 #ifdef DEBUG | |
| 4443 nfa_regengine.expr = NULL; | |
| 4444 #endif | |
| 4445 goto out; | |
| 4446 } | |
| 4447 | |
| 4448 | |
| 4449 /* | |
| 4450 * Match a regexp against a string. | |
| 4451 * "rmp->regprog" is a compiled regexp as returned by nfa_regcomp(). | |
| 4452 * Uses curbuf for line count and 'iskeyword'. | |
| 4453 * | |
| 4454 * Return TRUE if there is a match, FALSE if not. | |
| 4455 */ | |
| 4456 static int | |
| 4457 nfa_regexec(rmp, line, col) | |
| 4458 regmatch_T *rmp; | |
| 4459 char_u *line; /* string to match against */ | |
| 4460 colnr_T col; /* column to start looking for match */ | |
| 4461 { | |
| 4462 reg_match = rmp; | |
| 4463 reg_mmatch = NULL; | |
| 4464 reg_maxline = 0; | |
| 4465 reg_line_lbr = FALSE; | |
| 4466 reg_buf = curbuf; | |
| 4467 reg_win = NULL; | |
| 4468 ireg_ic = rmp->rm_ic; | |
| 4469 #ifdef FEAT_MBYTE | |
| 4470 ireg_icombine = FALSE; | |
| 4471 #endif | |
| 4472 ireg_maxcol = 0; | |
| 4473 return (nfa_regexec_both(line, col) != 0); | |
| 4474 } | |
| 4475 | |
| 4476 #if defined(FEAT_MODIFY_FNAME) || defined(FEAT_EVAL) \ | |
| 4477 || defined(FIND_REPLACE_DIALOG) || defined(PROTO) | |
| 4478 | |
| 4479 static int nfa_regexec_nl __ARGS((regmatch_T *rmp, char_u *line, colnr_T col)); | |
| 4480 | |
| 4481 /* | |
| 4482 * Like nfa_regexec(), but consider a "\n" in "line" to be a line break. | |
| 4483 */ | |
| 4484 static int | |
| 4485 nfa_regexec_nl(rmp, line, col) | |
| 4486 regmatch_T *rmp; | |
| 4487 char_u *line; /* string to match against */ | |
| 4488 colnr_T col; /* column to start looking for match */ | |
| 4489 { | |
| 4490 reg_match = rmp; | |
| 4491 reg_mmatch = NULL; | |
| 4492 reg_maxline = 0; | |
| 4493 reg_line_lbr = TRUE; | |
| 4494 reg_buf = curbuf; | |
| 4495 reg_win = NULL; | |
| 4496 ireg_ic = rmp->rm_ic; | |
| 4497 #ifdef FEAT_MBYTE | |
| 4498 ireg_icombine = FALSE; | |
| 4499 #endif | |
| 4500 ireg_maxcol = 0; | |
| 4501 return (nfa_regexec_both(line, col) != 0); | |
| 4502 } | |
| 4503 #endif | |
| 4504 | |
| 4505 | |
| 4506 /* | |
| 4507 * Match a regexp against multiple lines. | |
| 4508 * "rmp->regprog" is a compiled regexp as returned by vim_regcomp(). | |
| 4509 * Uses curbuf for line count and 'iskeyword'. | |
| 4510 * | |
| 4511 * Return zero if there is no match. Return number of lines contained in the | |
| 4512 * match otherwise. | |
| 4513 * | |
| 4514 * Note: the body is the same as bt_regexec() except for nfa_regexec_both() | |
| 4515 * | |
| 4516 * ! Also NOTE : match may actually be in another line. e.g.: | |
| 4517 * when r.e. is \nc, cursor is at 'a' and the text buffer looks like | |
| 4518 * | |
| 4519 * +-------------------------+ | |
| 4520 * |a | | |
| 4521 * |b | | |
| 4522 * |c | | |
| 4523 * | | | |
| 4524 * +-------------------------+ | |
| 4525 * | |
| 4526 * then nfa_regexec_multi() returns 3. while the original | |
| 4527 * vim_regexec_multi() returns 0 and a second call at line 2 will return 2. | |
| 4528 * | |
| 4529 * FIXME if this behavior is not compatible. | |
| 4530 */ | |
| 4531 static long | |
| 4532 nfa_regexec_multi(rmp, win, buf, lnum, col, tm) | |
| 4533 regmmatch_T *rmp; | |
| 4534 win_T *win; /* window in which to search or NULL */ | |
| 4535 buf_T *buf; /* buffer in which to search */ | |
| 4536 linenr_T lnum; /* nr of line to start looking for match */ | |
| 4537 colnr_T col; /* column to start looking for match */ | |
| 4538 proftime_T *tm UNUSED; /* timeout limit or NULL */ | |
| 4539 { | |
| 4540 reg_match = NULL; | |
| 4541 reg_mmatch = rmp; | |
| 4542 reg_buf = buf; | |
| 4543 reg_win = win; | |
| 4544 reg_firstlnum = lnum; | |
| 4545 reg_maxline = reg_buf->b_ml.ml_line_count - lnum; | |
| 4546 reg_line_lbr = FALSE; | |
| 4547 ireg_ic = rmp->rmm_ic; | |
| 4548 #ifdef FEAT_MBYTE | |
| 4549 ireg_icombine = FALSE; | |
| 4550 #endif | |
| 4551 ireg_maxcol = rmp->rmm_maxcol; | |
| 4552 | |
| 4503 | 4553 return nfa_regexec_both(NULL, col); |
| 4444 | 4554 } |
| 4555 | |
| 4556 #ifdef DEBUG | |
| 4557 # undef ENABLE_LOG | |
| 4558 #endif |